Answer:b) Reaction
Step-by-step explanation:
Gwen is using Reaction Formation defense mechanism which got triggered when a person true feeling is not accepted by society or considered it illegal, so they convince others and themselves that the opposite is true.
They often exaggerate over the topic to prove their point. Though Gwen always wanted to be a clown but due the fact that her college roommate dislikes the clown so her reaction formation came into effect.