What is the question exactly
Answer:
All elements are pure substances
Explanation:
Hope this helps luvv :)
The answer is A and C since clauses always have predicates which always contain verbs.
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.