The correct answer is A. The intervention technique know as confrontation involves making the client aware of discrepancies, such as discrepancies between verbal and nonverbal communication, statements made in the past in contrast to statements made in the present, or stated intentions in contrast to actual behavior.
B is incorrect because either explanation or anticipatory socialization are techniques which involve helping the client anticipate the consequences of his actions.
C is incorrect because interpretation is the technique used to help a client understand the deeper meaning of his behaviors.
D is incorrect because limit setting is an authoritative technique specifically directed at directing or redirecting a client's behavior. The question involves drawing attention to a client's communications, not directing his behavior.