Dania wanted to convince her audience that they should volunteer in their spare time. which purpose or motive of communication involves trying to change the attitudes and behaviors of others?

To influence

Explanation:

From the perspective of social psychology, social influence at the level of the analysis by the psychologist.  

From the perspective, the work of sociologist Robert B. Cialdini stands out. We start with understanding, to the amazing extent that our behavior and idea are automatic. Whatever we do, believe, say and believe in the product all are our habits. We all internalize our habitual, virtual, automatic behavior that is similar to our reflex response to a physical stimulus. When a doctor taps near your knee cap with a little rubber hammer, the reflex action occurs. In the same way, the human being reacts automatically and unconsciously to the external stimulus.