In Describing His Experiences During Decision Making That Preceded the Disastrous

In describing his experiences during decision making that preceded the disastrous Bay of Pigs invasion, Kennedy's adviser, Arthur Schlesinger, reported that although he was opposed to the invasion, he didn't speak out because "others would regard it as presumptuous of him, a college professor, to take issue with august heads of government institutions." This example best reflects ________ as a symptom of groupthink.

A) groups members' sense of invulnerability
B) decisive leaders' refusal to solicit other points of view
C) self-censorship in the interest of avoiding criticism
D) the isolation of groups