Kim and her family were involved in a road accident. Kim was the only survivor. Her son and husband were declared spot 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___

Kim is most likely suffering from post-traumatic stress disorder (PTSD).

Explanation:

We learned from the passage that Kim went through a traumatizing event - a tragic accident in which her son and husband were killed. After the accident, she began to have nightmares related to it, leaving her with feelings of helplessness and anxiety. Those symptoms are consistent with post-traumatic stress disorder, or PTSD.

PTSD is a mental condition that develops after a person experiences or witnesses a traumatizing event. Besides nightmares, symptoms can include physical reactions, emotional distress, flashbacks, hopelessness about the future, etc. Symptoms tend to appear months after the event, on occasion even years later.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.