Argument: A recent study showed that students who regularly consume energy drinks perform worse on standardized tests than students who do not. Therefore, schools should ban energy drinks to improve students' test scores. Which of the following, if true, would most weaken the argument?

The correct answer to the question "Argument: A recent study showed that students who regularly consume energy drinks perform worse on standardized tests than students who do not. Therefore, schools should ban energy drinks to improve students' test scores. Which of the following, if true, would most weaken the argument?" is Option A: Many students who consume energy drinks also tend to stay up late studying..

The other options — B) Standardized tests are not always an accurate measure of academic ability., C) The study did not control for the students' prior academic performance., D) Some energy drinks contain vitamins beneficial for cognitive function. — are incorrect for this GRE Exam Prep question. As explained above: If students consuming energy drinks also have a confounding factor (like sleep deprivation from late-night studying), then poor test performance might be attributed to the lack of sleep, not the ener…