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Rhetorical Purpose — why the author mentions X

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3 real Rhetorical Purpose questions, Tests 1 & 3

Rhetorical Purpose never asks what a detail says — it asks why the author put it there. 3 real examples, each solved by looking at the sentence right before the mentioned detail, not the detail itself.

Q40 — a mention used to set up a contrast

Q40: “Why does the author mention wheat and barley in the passage?”

The passage describes wheat and barley as “domesticated from wild grasses that already produced relatively large, easily harvested seeds” — right before explaining that wild rice “presented early cultivators with a more challenging plant.” The mention exists to set up that contrast, not to teach you about wheat and barley themselves.

Answer: To contrast their easier domestication with rice’s more difficult process.

Q45 — a mention used to show wider reach

Q45: “Why does the author mention business analysts and historical buildings in the passage?”

These examples come right after the sentence “The bias appears well beyond wartime engineering” — they’re there to prove that claim, showing survivorship bias shows up in fields far outside the plane example the passage opened with.

Answer: To illustrate that the bias described appears in fields well beyond wartime engineering.

Q45 — a mention used as an analogy

Q45 (Test 3): “Why does the author mention a bent stick?”

The passage says locked crust “continues to deform elastically, storing mechanical energy much like a bent stick stores energy before it snaps.” The bent stick isn’t the topic — it’s a familiar physical comparison, there purely to make an abstract idea (stored elastic energy in rock) easier to picture.

Answer: To illustrate, through analogy, how crust stores mechanical energy before rupture.

A contrast → a wider-reach example → an analogy, revealed in order
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3 real Rhetorical Purpose questions

  1. What does a Rhetorical Purpose question ask, compared to a Factual Detail question?Why the author included a detail — its role in the argument — not what the detail itself states.
  2. Q40 asks why the author mentions wheat and barley — what's the actual purpose?To contrast their easier domestication with rice's harder one, not to inform you about wheat and barley.
  3. Q45 asks why the author mentions business analysts and historical buildings — what does that follow in the passage?The claim "the bias appears well beyond wartime engineering" — the examples prove that reach.
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