What is most closely the meaning of acknowledge as it is used in the passage below (paragraph 36)?

When you’re in court, you sit there and you pay attention. You let the jury know that you think the case is as serious as they do. You don’t turn and wave to any of your friends. It’s all right to acknowledge your mother.
Answer choices for the above question

A. verb | to recognize or accept

B. verb | to greet or salute

C. verb | to show gratitude or appreciation

D. None of the above