For the psychopath, becoming adept as a serial killer requires perfecting this.

a. rationalization and unconscious pretense

b. rationalization and conscious pretense

c. conscious pretense

d. rationalization

A). rationalization and unconscious pretense

Explanation:

A serial killer has a controversial feelings, and a person adept with these ideas can't understand their acts as ordinary people does. Their behavior are justified and explained in a seemingly rational or logical manner to avoid the true explanation and then consciously considered tolerable - or even admirable and superior - by plausible means. And the unconscious pretense happens because of the lack of comprehension about socialization, and the inability to perform a true feeling.