Free SAT® Practice Question: Details

Also Great Practice for ACT® Reading

Today’s drill is a mock SAT® Details Question. It follows the digital SAT® format¹ but is also great preparation for ACT® Reading.

For effective time management on test day, you should aim to answer this question correctly in a maximum of 75 seconds.

Consistent daily practice and study is the best way to improve your SAT® score. To gain access to all answer explanations and strategy guides, become a premium subscriber. You’ll also be able to post comments and questions.

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Free SAT® Practice Question

For decades, the only documented observations of bioluminescent tardigrades—a rare subgroup of microscopic water-dwelling extremophiles commonly known as water bears and distantly related to modern arthropods—came from three known varieties discovered in the deep caves of southeastern Asia. In a finding that broadens our knowledge of the habitat range of these luminous tardigrades, biologist Maya Chen and colleagues have recorded and identified a new bioluminescent tardigrade species, Ursellum borealis, that thrives in the subglacial lakes beneath the Greenland ice sheet.

According to the text, why was Chen and her team's discovery of the Ursellum borealis species important?

A. The species represents the first evidence collected by researchers that bioluminescent tardigrades can survive in temperatures below freezing.

B. The species helps confirm that bioluminescent tardigrades share more genetic material with arthropods than previously established.

C. The species helps create a more detailed picture of the evolutionary adaptations of bioluminescent tardigrades in isolated environments.

D. The species represents the first evidence collected by researchers that bioluminescent tardigrades exist outside the cave systems of southeastern Asia.

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Answer Explanations and Strategy Guide