Fear Arousal Is Likely to Be an Effective Persuasive Tactic

Fear arousal is likely to be an effective persuasive tactic

A) as long as the level of fear is sufficiently high.
B) with an audience that is relatively ignorant of the issues.
C) as long as the receiver thinks the source's advice is reasonable, and the level of fear is extremely high.
D) if the negative consequences are unpleasant, e.g., fairly probable if the receivers don't follow the source's advice, and avoidable if they do.