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SAT Reading & Writing: Hard Rhetorical Synthesis (Drill 24)

Drill 24 · Reading & Writing · Hard Rhetorical Synthesis

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About This Drill

SAT Reading & Writing: Hard Rhetorical Synthesis (Drill 24) is a Reading & Writing practice drill covering Hard Rhetorical Synthesis. It contains 5 original questions developed by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.

Hard Rhetorical Synthesis questions present a set of research notes and a specific writing goal, then ask you to choose the sentence that best accomplishes that goal using only the notes. The wrong answers are usually accurate statements that serve a different purpose than the one asked for, or that subtly misstate the notes. Match the rhetorical task exactly.

Questions & Explanations

Notes
While researching a topic, a student has taken the following notes: • The bombardier beetle defends itself by spraying a hot, irritating fluid from the tip of its abdomen. • It stores two ingredients together in a reservoir: hydrogen peroxide and a compound called hydroquinone, which stay stable while separated from enzymes. • When threatened, the beetle forces this mixture into a reaction chamber lined with enzymes that trigger a rapid reaction. • The reaction converts the ingredients into an irritant and releases enough heat to bring the fluid near the boiling point of water, ejecting it as a pulsed spray. • The beetle can swivel the tip of its abdomen to aim the spray toward a threat from almost any direction.

Question 1. The student wants to explain to readers how the bombardier beetle produces its spray. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  • A) The bombardier beetle stores hydrogen peroxide and hydroquinone together in a reservoir, where they stay stable as long as they are kept apart from the enzymes that would set the reaction off.
  • B) The beetle forces the stored peroxide and hydroquinone into an enzyme-lined chamber, where they react into an irritant and heat the fluid nearly to boiling, ejecting it as a pulsed spray. ✓
  • C) When facing a threat, the bombardier beetle can rotate the tip of its abdomen to direct the spray at a predator from almost any angle.
  • D) The bombardier beetle defends itself by spraying a hot and irritating fluid from the end of its abdomen.

Explanation: Choice B is the best answer. The sentence traces the ingredients into the reaction chamber and through the heat-producing reaction that ejects the spray, tracing the process the goal wants. Choice A describes how the ingredients are stored before the reaction, the setup rather than the reaction itself. Choice C explains how the beetle aims, a separate ability that is not part of producing the spray. Choice D states that the beetle sprays a hot fluid but not how that fluid is made.

Notes
While researching a topic, a student has taken the following notes: • Raku is a Japanese firing method in which a pot is pulled from the kiln while still glowing hot, rather than cooling slowly inside. • The sudden move into open air sends the piece through a violent temperature change, and in many modern Western raku firings the hot piece is then set into a bin of combustible material. • This thermal shock crackles the glaze into a fine web of lines and draws smoke into the cracks and bare clay, producing dramatic, unpredictable surfaces. • The same shock that creates the effect also cracks or shatters many pieces outright, so losses are high. • Raku ware is generally porous and not watertight, making it prized for display rather than daily use.

Question 2. The student wants to convey a production risk potters face during raku firing. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  • A) Raku ware tends to be porous and not watertight, which makes it valued for display more than for everyday use.
  • B) Raku is a Japanese firing method in which the potter removes a piece from the kiln while it is still glowing hot.
  • C) The abrupt shift from the kiln into open air, and in modern Western raku into a bin of combustible material, puts the piece through a violent change in temperature within moments.
  • D) The same thermal shock that gives raku its crackled, smoke-marked surface also cracks or destroys many pieces outright, so a high rate of loss is built into the method. ✓

Explanation: Choice D is the best answer. The sentence names the production risk the goal asks for, the high breakage during firing that the prized thermal shock often causes. Choice A points to porosity, a limitation of the finished ware rather than a risk faced during the firing itself, and frames it as a point of value. Choice B defines the raku method without identifying any risk. Choice C points to the temperature change that drives the process, the cause of the effect rather than a risk to the work.

Notes
While researching a topic, a student has taken the following notes: • Cochineal is a red dye obtained from a small scale insect that lives on prickly-pear cactus in the Americas. • The dye's color comes from carminic acid, a compound the insect makes in its body as a deterrent against predators. • Long before European contact, peoples of Mexico cultivated the insect and used its crimson for textiles and art. • After conquest, Spain shipped vast quantities of dried cochineal to Europe, where it became one of the most valuable goods carried across the Atlantic. • To turn the raw extract into a stable pigment, makers combine carminic acid with metal salts in a step called laking.

Question 3. The student wants to situate cochineal within the history of trade between the Americas and Europe. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  • A) Cultivated in Mexico before European contact, cochineal's crimson was carried across the Atlantic by Spain to become one of the colonial trade's most valuable goods. ✓
  • B) Cochineal is a red dye taken from a small scale insect that lives on prickly-pear cactus in the Americas.
  • C) The red of cochineal comes from carminic acid, a compound the insect produces in its body to deter predators.
  • D) To convert the raw extract into a stable pigment, producers combine the carminic acid with metal salts in a step known as laking, which fixes the color so it can be used.

Explanation: Choice A is the best answer. The sentence places cochineal in its colonial-trade history, from Mexican cultivation to a prized Atlantic export, the trade history the goal calls for. Choice B identifies the dye and its insect source without any reference to trade history. Choice C explains the chemical origin of the color, a scientific detail rather than a historical one. Choice D describes the laking step that stabilizes the pigment, a process point unrelated to the trade story.

Notes
While researching a topic, a student has taken the following notes: • A corbel arch and a true arch both span an opening with stone, but they carry weight in different ways. • A corbel arch is made by stacking stones so each course juts slightly past the one below until the two sides meet at the top. • Its stones bear down mostly straight, like stacked shelves, so the span it can cross is limited before the overhang fails. • A true arch is built from wedge-shaped stones, called voussoirs, set in a curve and locked by a central keystone. • In a true arch the load is turned into outward, sideways thrust passed along the curve, letting it span much wider openings.

Question 4. The student wants to convey how a corbel arch and a true arch differ in carrying weight. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  • A) A true arch is assembled from wedge-shaped stones, the voussoirs, arranged in a curve and locked in place by a central keystone set at the very top of the span, which the builder fits last.
  • B) A corbel arch is formed by stacking stones so that each course projects a little past the one beneath it until the sides meet.
  • C) A corbel arch carries its load nearly straight down through stones that overhang course by course, while a true arch turns the load into sideways thrust along its curve, spanning far wider. ✓
  • D) Both the corbel arch and the true arch are ways of spanning an opening with stone rather than with timber or another material.

Explanation: Choice C is the best answer. The sentence contrasts the corbel's straight-down overhang with the true arch's redirected sideways thrust and the span that follows, the difference in load-bearing the task asks for. Choice A describes the true arch alone, leaving the corbel and the contrast unstated. Choice B recounts the corbel's construction without comparing how either form bears weight. Choice D notes only that both span openings in stone, the shared trait rather than the difference.

Notes
While researching a topic, a student has taken the following notes: • Predicting the tides at a port is hard because they result from many overlapping cycles in the pull of the moon and sun. • Rather than solving the physics directly, harmonic analysis treats the tide as the sum of many simple regular waves, each with its own steady rhythm. • Decades of measurements at a port reveal the size and timing of each component wave for that specific place. • Adding the waves back together for any future date yields a prediction of the water level hour by hour. • By the late nineteenth and early twentieth centuries, geared machines were built that summed these waves mechanically to print tide tables far faster than hand calculation.

Question 5. The student wants to summarize how harmonic analysis predicts the tides. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  • A) Decades of careful measurement at a single port reveal the size and the timing of each component wave for that particular location.
  • B) Harmonic analysis treats each port's tide as a sum of simple regular waves, measured over years, then adds them back together to predict the level on any future date. ✓
  • C) By the late nineteenth and early twentieth centuries, geared machines were built that summed these component waves mechanically and printed tide tables far faster than anyone could manage by hand.
  • D) Tides are difficult to predict because they arise from many overlapping cycles in the gravitational pull of the moon and the sun.

Explanation: Choice B is the best answer. The sentence condenses the method into its essentials, decompose each port's tide into measured waves and recombine them to predict, summarizing the method as asked. Choice A covers only the measuring step, one piece of the method rather than the whole. Choice C highlights the tide-predicting machines, a historical detail rather than a summary of the method. Choice D restates the problem the method solves without describing the method itself.