The correct answer is C
Explanation
The structure of the sentence sets up a contrast between two ways of describing the lecturer. The fact that she had a charismatic, or magnetic, presence, does indeed contrast with the notion that the content of the lecture was unsophisticated and “vapid” or uninteresting.
Critical Reading > Sentence Completions
Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
There was no denying the lecturer’s ------- , but her arguments were unsophisticated and ------- .
(A) bravura . . precise
(B) boorishness . . unoriginal
(C) charisma . . vapid
(D) competence . . infallible
(E) indifference . . benign
