SAT Practicee2a04a2f-1b77-450f-8d40-6adb9294ce88
Practice one SAT question at a time
Questions come from the Bluebook question bank.
While researching a topic, a student has taken the following notes:
- Scientists have long sought to determine the origin of glass in Chile’s Atacama Desert.
- A 2017 study concluded that ancient grass fires had melted the area’s sandy soil into glass.
- In 2021, a different study revealed that the mineral signatures of glass samples were consistent with the mineral signatures of comet samples collected by NASA.
- That study concluded that the glass had formed as a result of a cometary explosion close to the desert’s surface.
The student wants to describe how scientific understanding about the glass’s origin has evolved. Which choice most effectively uses relevant information from the notes to accomplish this goal?