Answer: b) Free association
Explanation:
Free association is therapy method in which the thoughts, emotion feelings of a patient is learned and discovered. The unconscious feelings and thoughts that are extracted through this technique is usually suppressed, non-valued or ignored by the person .
Sharing of any thoughts, dream, content with therapist is used for exploring patient's thinking without any judgement.
According to the question's situation, Jenny's therapist is using free association as she is open to listen about any ideas and memories of Jenny during therapy to investigate her thinking process and feelings.
Other options are incorrect because active learning is process of people collectively working towards learning. Transference is transferring feelings from one person to other through communicating .Systematic desensitization is a phobia treatment.
Thus, the correct option is option (b).