Answer:
d) post-traumatic stress disorder.
Step-by-step explanation:
a) generalized anxiety disorder: Generalized anxiety disorder (or GAD) is characterized by excessive, exaggerated anxiety and worry about everyday life events with no obvious reasons for worry. People with symptoms of generalized anxiety disorder tend to always expect disaster and can't stop worrying about health, money, family, work, or school.
b) panic disorder: A panic attack is a sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause.
c) social phobia: Social anxiety disorder, sometimes referred to as social phobia, is a type of anxiety disorder that causes extreme fear in social settings. Social anxiety is persistent and debilitating. It can affect one’s ability to work, attend school or develop close relationships with people outside of their family
d) post-traumatic stress disorder: Post-traumatic stress disorder (PTSD) is a mental disorder that can develop after a person is exposed to a traumatic event - either experiencing it or witnessing it. The event could be sexual or physical assault, warfare, traffic collisions, child abuse, the unexpected death of a loved one, an accident, natural disaster or other threats on a person's life. Symptoms may include flashbacks, nightmares and severe anxiety, as well as uncontrollable thoughts about the event.
From the above explanation, the answer is d) post-traumatic stress disorder.