An argument states: "Since most students at University X who attend daily study groups achieve high grades, attending daily study groups must be the primary cause of high academic performance for all university students." What is a key unstated assumption in this argument?
✓ Correct Answer: Option A
The argument extrapolates findings from a specific group (University X students) to a much broader population (all university students) without establishing that the specific group is representative. This is a crucial unstated assumption.