Answer:
B.
Explanation:
Even without the full authors context, based on common knowledge and process of elimination, B is the most probable answer.
Here is an example of how the two can be used differently..
If someone is talking to much and cutting you off in conversation you could tell them to stop. This would be a verbal cue.
A nonverbal cue would be if you seemed uninterested in the conversation and continued giving them weird looks or ignored them.
It was great!! Thanks for asking!!
C. focusing attention on important words and phrases.
I would have to say A would probably be the best answer because the others are just a regular sentence telling them about the positive things about volunteering but A has a quote and to me that helps get people interested better.
