Upon their arrival in the United States, many refugees struggle with post-traumatic stress disorder. What is post-traumatic stress disorder?

Post-traumatic stress disorder (PTSD) is a mental health condition that can develop after someone experiences or witnesses a traumatic, frightening event. This matches choice C. Grief, fear of an unfamiliar place, and physical weakness from malnutrition are different experiences or conditions.

AI-written and checked against the verified answer.