Answer:
c. free association
Step-by-step explanation:
In psychotherapy, the term of free association refers to the act by which the client shares his/her thoughts and anything that comes to mind without censoring anything, so, the thoughts might seem random but they are actually a way to access to their minds and deepest feelings and to how their minds work.
In this example, Jenny was instructed by her therapist to report any ideas or memories stimulated by the intrusive thoughts she's been having. Jenny is supposed to share the ideas and memories that come to her mind without stopping them or censoring them, therefore, the therapist is using free association.