The correct answer is D. It is a reference to the poets deceased father.
This seems to be a declarative sentence. It talks about the reaction of the policeman to a specific thing. His expression is not pleasant. What he might saw is something not good and something to worry about. Other possible thing could be there an heinous crime scene that he faced at that moment. It depends on the situation.<span />
The appropriate response is compound subject. A compound subject is a subject comprised of at least two straightforward subjects that are joined by a planning conjunction and that have a similar predicate. sentence may have more than one straightforward subject or basic predicate. A compound subject is at least two basic subjects that have a similar predicate.
<span>Since adjectives tell us how much or how many of something you're talking about, "many" which comes before the noun "books" is the adjective. On the other hand, adverbs answer the question: How, When, Where, To what extent, or magnitude, so the word "there" answers the "where" question. It modifies the adjectives and verb.</span>