Phobia refers to the patient's strong fear of a certain object or situation or when interacting with people, and take the initiative to avoid to relieve the anxiety.
According to the above definition, which of the following options is phobia?
Liu Yan is a very introverted person. She blushes at the sight of strangers. When meeting members of the opposite sex, things get wrose that she can't even speak, soshe is particularly afraid of social occasions. She is very nervous every time when the company organizes activities.