请教一道manhattan模拟的SE题

sulove90UID：3499067

Despite pressure from right-leaning board members to _______ leftist propaganda evident in the current editorial biases, the city's newspaper has maintained some sense of neutrality because a majority of the board understood the conservative caucus to have sham intent in trying to galvanize public opinion against the paper.

A. vacillate
B. prevent
C. sanction
D. inoculate against
E. wallow in
F. waver






答案是CE

绕不过来这题里面的逻辑，求教高人。谢谢！

sulove90UID：3499067

求大神