The answer is C. Why it’s C is because it’s describing two things which would need a comma between
B. Zaroff respects Rainsford and thinks that he will be a worthy opponent.
Zaroff knows Rainsford is intelligent and will be a worthy oppenent because he hasn't had one thus far in his game. He's heard of Rainsford and is aware of his celebrated status as a renowned big game hunter so he's confident in him.
Yo dijo que es B biblioteca
<span>Choice (D) is the most grammatically correct sentence. This sentence has a dependent clause followed by an independent clause, both separated by a comma. This allows for the two clauses to be properly joined and for the sentence to contain a logical flow.</span>