OG214

214. 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

(E)   it is in reference to people

OG说，

Also, the word people incorrectly shifts number from singular to plural

但是我觉得所有的精神病人都是PHYCHOPATH，

把这一类人归为PHYCHOPATH的话，IT IS IN REFERENCE TO PEOPLE我觉得正确。

就好像OG123题，

The Federalist papers, a strong defense of the United States Constitution。。。

把PAPERS看成了一个整体，用了一个单数同位语一样。

Please pay attention to the non-underlying sentence " Although the term "psychopath" is popularly applied to an especially brutal criminal...........................

so I think ETS think singular term should refer to singular corresponding noun. BTW, E still has other errors, such as omitting main verb ( though I don't understand what it means too) and changing verb "refers" to noun "reference".