The correct answer is C. The most commonly which is associated with anxiety disorder is compulsion to wash repeatedly.
Anxiety disorder is termed as distress or mental illnesses which disallows someone to continue with life in a normal way.
There are different types of disorders. For example,
1. Specific phobias, here someone feels fear of certain situation for example flying.
2. Panic disorder, someone feels terror which can strive at any given time.
3. Social anxiety disorder in another name is referred to as social phobia where a person feels self-consciousness and being overwhelmed.
