The answer is C
Answer A is showing more than one chairman of the board, and answer B is just wrong. Answer D is showing more than one chairman of the board has posession of the microphone, but the sentence indicates that there is only one chairman of the board, so therefore, the answer C is the one you want because it is showing singular possession of the microphone
I can help you with 17! People can be nervous if they are in a situation where time isn't on there side, or when they are around someone they find attractive (a crush) and people can get nervous when they are in a competition and they want to succeed at whatever they are doing(like a sport for example)
Hope this helped a little!! :)
The answer is B... also you could search the meaning
The protests that happened earlier in the year were a major factor in effecting black history month we have shined some light on the racial injustice and we are seeing profit
