medium · GMAT Verbal Reasoning
A researcher claims that a new study habit improves grades because 80% of the students who tried it saw their scores go up.
The argument depends on which of the following assumptions?
- A student's measured grades are the single sole valid measure of that individual's underlying intelligence.
- Every student now enrolled at the school will eventually choose to adopt the new study habit.
- Not even one student saw their grades actually decrease after they adopted the new study habit.
- The new study habit is the only available method by which any student could ever possibly improve grades.
- The score gains were not better explained by those students already being more motivated to succeed.
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