Some positive communication behaviors that account for successful leader emergence are ______.

A) sense of humor, facial expressiveness
B) being dominant, speaking frequently
C) differentiating oneself from the group, challenging group norms
D) being informed, initiating new ideas

Being informed and initiating new ideas are positive communication behaviors that show competence and creativity, which are highly valued in leadership roles. Sense of humor and facial expressiveness may be beneficial in some contexts, but are not necessarily linked to leadership emergence. Being dominant and speaking frequently can be perceived as aggressive and domineering, rather than as effective leadership qualities. Differentiating oneself from the group and challenging group norms can also be seen as disruptive and may not necessarily lead to successful leader emergence.