Free SAT Practice Question

Question 1 of 1
ID: SAT-RW-CS-018
Section: SAT Reading & Writing (RW) – Craft and Structure
Topic: Text Structure and Purpose
Difficulty level: Medium

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The following text is adapted from a science article.

Astronomers have long assumed that the rings of dust surrounding young stars are smooth and evenly spread. Using a new array of linked telescopes, Mei-Lin Sato and her team produced the sharpest images yet of one such ring and found it broken into narrow, well-defined bands separated by nearly empty gaps. Sato notes that the gaps fall exactly where an unseen planet's gravity would be expected to sweep material aside. The structure of a ring, she suggests, may quietly record the planets taking shape within it.

Which choice best states the main purpose of the text?

ATo describe the method Sato's team used to capture sharper images of the ring.

BTo confirm the long-standing assumption that the dust rings around young stars are smooth.

CTo give a general account of how planets form from the dust surrounding young stars.

DTo present an unexpected observation about a dust ring's structure and note what it may reveal.

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