Lillian is experiencing an anxiety disorder in which she is afraid of not being able to escape what she perceives to be a threatening situation. based on this, lillian is most likely to be diagnosed

a. generalized anxiety disorder.
b. social phobia.
c. a specific phobia.
d. agoraphobia.

The answer is d. agoraphobia.

Explanation:

Agoraphobia is a constant sense of worry about situations in which it is difficult to escape. The situations themselves might be harmless, but fear is heavily intensified due to anxiety.

An agoraphobic person might be reluctant to be in open or enclosed spaces, and resistant to be among crowds. For this reason, agoraphobia interfers with daily activities.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.