Although not enough to ___ the conventional view of the manuscript's provenance, the new study was thought to have weakened the prevailing theory considerably.
a. undermine
b. affect
c. resurrect
d. disturb
e. topple
답은 e인데, 왜 a는 안되나요? 둘다 훼손시키다, 약하게 하다라는 의미에서 가능하지 않나여?
a와 e의 차이를 모르겠습니다