Kim and her family were involved in a road accident. Kim was the only survivor. Her son and husband were declared dead. When Kim returned home, she started having dreams about people dying in tragic accidents. These nightmares left Kim with a rapid heart rate and feelings of anxiety and helplessness. Kim is most likely suffering from ________.

A) body dysmorphic disorder
B) dissociative identity disorder
C) post-traumatic stress disorder
D) somatoform disorder

Kim's symptoms of nightmares, rapid heart rate, and feelings of anxiety and helplessness after experiencing a traumatic event suggest that she is suffering from post-traumatic stress disorder (PTSD). Body dysmorphic disorder and somatoform disorder are characterized by preoccupation with physical appearance or bodily sensations, respectively, while dissociative identity disorder involves the presence of multiple distinct identities or personality states. None of these conditions are consistent with the symptoms described for Kim.