Paradox: Native English speakers should do well since the GMAT is in English, but their average score is low. We need something that doesn’t explain this gap.
(A) GMAT tests analytical skills and logic, not English knowledge.
This explains the paradox: native speakers’ English skills don’t help much if the test isn’t about language. Resolves well.
(B) GMAT has a quantitative section testing math skills.
This explains: native speakers might struggle with math, not language, lowering their scores. Resolves well.
(C) GMAT scores form a bell-shaped curve, so scores depend on others’ performance.
This explains: if others (non-native speakers) score higher, native speakers’ relative scores drop, even with language skills. Resolves well.
(D) GMAT has a severe time limit, and many run out of time.
This explains: native speakers might not finish due to time, not language issues, lowering scores. Resolves well.
(E) 60% of GMAT test-takers are American.
This doesn’t explain why native speakers score low. It just says many test-takers are American (likely native speakers), but doesn’t address their low scores. Least resolving.
Answer: E