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
The answer is exhausted the context clues given allows you to understand that she is tired from rowing all day not annoyed or happy
The answer would be the first one, Clara's curiosity shows how openness to her new experiences makes hard times enjoyable
The answer to your question is C.
