Answer:
D. Martin
Step-by-step explanation:
Jaya shouldn't be making eye contact with one specific person, she should be looking out at the entire audience.
Asha is using verbal communication, not nonverbal.
Amy is pacing, which can be a distraction to the audience, plus, it's showing the audience that they should be worried when they don't have to be.
The only one who used effective nonverbal communication from what I can see is Martin, who is using hand gestures like pointing to attract the audience to the image.
I hope this helps! Have a lovely day!!! :)