When you're composing a persuasive message,all of the following EXCEPT ________ are common mistakes that you need to avoid.

A) using a hard-sell approach
B) promoting compromise
C) relying solely on great arguments
D) assuming that persuasion is a one-shot effort

Promoting compromise is not a mistake to avoid when composing a persuasive message. In fact, being open to finding common ground and compromising can often be an effective way to persuade someone. The other options (using a hard-sell approach, relying solely on great arguments, assuming persuasion is a one-shot effort) are common mistakes to avoid when composing a persuasive message because they can come across as pushy, one-sided, and unrealistic.