Final answer:
Posttraumatic stress disorder (PTSD) can occur in any age group, and is not limited to a specific gender or age range.
Step-by-step explanation:
Posttraumatic stress disorder (PTSD) can occur in any age group, so option 4 is the correct answer. PTSD is an anxiety disorder that can develop after experiencing or witnessing a traumatic event. It is not limited to a specific gender or age range.