Question

Although the term “psychopath” is popularly applied to an especially brutal criminal, in psychology it is someone who is apparently incapable of feeling compassion or the pangs of conscience.

• A. it is someone who is
• B. it is a person
• C. they are people who are
• D. it refers to someone who is

Answer 1

The correct option is D it refers to someone who is

The singularity of the main verb eliminates C which uses a plural pronoun “they”.
Also “the term” cannot be people. It serves as only a reference to a class of people. This logic eliminates A and B.

Hence D is the answer.