An argument states, 'Since the average GPA of students at University X has increased dramatically in the last five years, the quality of teaching must have significantly improved.' Which analytical approach would be most effective in challenging this conclusion in an AWA essay?
✓ Correct Answer: Option B
The argument assumes improved teaching as the sole cause. An effective challenge would introduce other plausible factors that could explain the GPA increase, thus weakening the argument's causal link.