The first step a speaker should take when trying to understand what motivates listeners is to . demonstrate knowledge of the topic balance competence and caring identify the needs and desires of the listeners provide evidence of his or her reasoning

identify the needs and desires of the listeners          

Explanation:

The first step a speaker should take when trying to understand what motivates listeners is to identify the needs and desires of the listeners. This necessary for effective delivery, once the needs and desires of the listeners have been identified, the speaker must try to satisfy these needs with the use of motivational appeals.      

the president has the power to appoint federal judges, ambassadors, and other "principal officers” of the united states, subject to senate confirmation of such appointments.