Answer:
B. Posttraumatic stress disorder (PTSD).
Explanation:
Posttraumatic stress disorder (PTSD) is a type of anxiety disorder that can results from a traumatic or terrifying past experience. These symptoms include: flashbacks, nightmares, or constant fear after the fact.
Exercise is physical activity that requires planned structured repetitive movement. Fitness is the the body's ability to supply energy during continuous physical activities.
