Free SAT Practice Question

Question 1 of 1
ID: SAT-RW-CS-002
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 an article about scientific fieldwork.

For years, researchers studying monarch butterfly migration struggled to understand how such small creatures could navigate thousands of miles with remarkable accuracy. Laboratory studies provided limited insight, as they failed to replicate real-world conditions. To address this, scientists attached lightweight GPS trackers to the butterflies and released them into the wild, allowing for data collection over long distances.

Which choice best describes the function of the underlined sentence in the text as a whole?

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