I would say that it is false that the sentence uses the proper pronoun. We don't know whether the crew member is a man or a woman, which is why you cannot use <em>him </em>here. You should say - them. If we knew it was a man, then <em>him </em>would be fine.
Answer:
Bill is a careful driver.
Explanation: Bill is a carefully driver wouldn't make sense unless you are saying "Bill drives carefully."
It is a warning about someone's paralanguage. Paralanguage is a component of meta-communication that may modify or nuance meaning, or convey emotion, such as prosody, pitch, volume, intonation etc. It is sometimes defined as relating to nonphonemic properties only. Paralanguage may be expressed consciously or unconsciously.