Answer:
D. post-traumatic stress disorder.
Explanation:
Post-traumatic stress disorder: In abnormal psychology, the term post-traumatic stress disorder is also referred to as PTSD, and is described as mental illness and mental health condition that is being triggered by a traumatic or terrifying event by witnessing or experiencing it.
Symptoms: Severe anxiety, flashbacks, unstoppable thoughts, and nightmares related to the event.
An individual can experience PTSD at any age of his or her life.
Types:
1. Serious accidents.
2. Physical or sexual assault.
3. Childhood abuse.
In the question above, Sandra has symptoms suggestive of post-traumatic stress disorder.