People are likely to rely on self-perception to understand their attitudes when:

A) they are in a new or unexpected situation.
B) they are in a familiar situation.
C) they are reaching the end of a particular career stage,but before they have begun a new one.
D) there is a salient external factor that might explain their behavior.

Self-Perception

An individual's understanding and evaluation of their own behavior, traits, and values.

Salient External Factor

Refers to a noticeable, external element or condition that significantly influences individuals' thoughts, feelings, or behaviors.

Attitudes

A psychological tendency expressed by evaluating a particular entity with some degree of favor or disfavor.