Zaroff is likely to kill again because he does not value human life
Okay, for the first one the anwser is D, for the second question the answer is B.
Answer: True
Explanation: In order to do a research on any topic, the first step is to establish the significance of the study, since making this statement is the basis of any proper investigation. It allows the writer to approach the purpose accurately and have high-quality knowledge in the field, avoiding then, any possible confusion or misleading of the topic.