**Core Concept**
Post-traumatic stress disorder (PTSD) is a psychiatric condition that develops after an individual experiences a traumatic event, resulting in persistent symptoms of anxiety, fear, and avoidance. The disorder is characterized by a complex interplay of physiological, psychological, and social factors.

**Why the Correct Answer is Right**
PTSD symptoms can be broadly categorized into four main domains: intrusion (e.g., flashbacks, nightmares), avoidance (e.g., avoiding reminders of the trauma), negative alterations in cognition and mood (e.g., guilt, shame), and alterations in arousal and reactivity (e.g., hypervigilance, exaggerated startle response). The correct answer should reflect one of these domains.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe a symptom of PTSD.
**Option B:** This option is incorrect because it is not a characteristic symptom of PTSD.
**Option C:** This option is incorrect because it is not a core feature of PTSD.
**Option D:** This option is incorrect because it does not accurately describe a symptom of PTSD.

**Clinical Pearl / High-Yield Fact**
It is essential to recognize that PTSD can manifest differently across individuals, and symptoms may not always fit neatly into the four main domains. A thorough diagnostic evaluation is necessary to accurately diagnose PTSD.

**Correct Answer:** D.