Our verbal and nonverbal blank provides close to her attitude on a given topic

Our verbal and nonverbal COMMUNICATION provides clues to our attitude on a given topic.

Spoken or verbal communication can be done through face-to-face communication, through the use of telephones, mobile phones, radio or television and other media.

Non-verbal communication refer to our body language, our gestures, and even how we dress and act.

Example: A given topic is about increasing pay of employees:
your verbal communication: Yes! I agree with that.
your non-verbal communication: nodding your head, clapping your hands and giving a thumbs-up, 

Iam pretty sure the answer is b