HELP ME PLZZ I NEED HELP WITH THIS!! I CAN'T FAIL THIS SO PLEASE HELP ME!!

Answer:
D. Give an example.
Explanation:
I would say that D is the correct answer because the author is describing how "the eyes of the people in a photo can reveal a fake.", or in other words, providing an example.
I hope this helped you. Good luck on the rest of your test!