All of the following are sources of information about efficacy except

A) performance attainment.
B) vicarious experiences.
C) verbal persuasion.
D) performance on projective tests.

Efficacy

The ability to produce a desired or intended result; often used in the context of individual capabilities or the effectiveness of interventions.

Vicarious Experiences

Learning that occurs by observing the actions and outcomes of others' behavior, without direct personal experience.

Projective Tests

Psychological assessments that use ambiguous stimuli to elicit responses that reveal aspects of an individual's personality.