D)slowing the pace of your speaking down significantly.
Explanation:
Nonverbal techniques can helps us to communicate better what we are trying to say, and can help us convince and persuade better our audience, a good technique to use qhen you want to ephazise a word is S-L-O-W-I-N-G down the pace of your speaking, this way you can attract the attention of your audience and make them keep those words in mind.
