An argument states: 'Since the local library started offering free online courses, book borrowing has decreased by 20%. Clearly, the online courses are discouraging people from reading physical books, and we should discontinue them to boost traditional library usage.' Which of the following is the most significant flaw in this argument's reasoning?
✓ Correct Answer: Option B
The argument assumes a direct causal relationship without exploring other potential factors (e.g., rise of e-readers, other leisure activities) that could explain the decrease in book borrowing. This is a classic causal oversimplification.