Question: A 63 year old female with a long history of generalized anxiety disorder tells you she was out shopping two days ago when she suddenly felt dizzy, experienced heart palpitations and pressure on her chest; and felt a sense of impending doom. Shortly after she "passed out" and woke up minutes later with a crowd of people surrounding her. She states that she then felt better and decided to keep shopping. What is the most likely diagnosis? Question Select one: a. Cardiovascular Disease b. Social Anxiety c. Acute Stress Reaction d. Panic Disorder