Brian is a psychologist. he has his clients sign contracts and gives them "homework," which they must complete and then report the results of these actions to him at the next session. brian's type of therapy would best be described as

The technique Brian uses is described as the directive therapy.
Directive Therapy refers to the technique wherein the psychologists asks a series of questions to the patient and once answered, he or she interprets the patient's feelings or problems. In this case, Brian gives his patients home works to be submitted during the next session, wherein he will entertain and interpret the results of his given home work to his patients.

3. i would say one, but one is not prime nor composite.