Psychotherapy is likely to be most effective when a client's difficulty involves

A) a clear-cut and specific problem.
B) unconscious conflicts.
C) a response to a stressful life situation.
D) self-inflicted suffering.

Psychotherapy is most effective when there is a clear-cut and specific problem to be addressed. This allows for targeted interventions and measurable progress. If the difficulty is more vague or unconscious, it may be more challenging to identify and treat the root cause. While psychotherapy can still be helpful in these cases, it may require a longer and more exploratory process.