Questions: Alex's house was broken into and the perpetrator brutally attacked her. Since the attack, she has been overly cautious and watchful. The smallest noise startles her. If someone looks at her "strangely," she becomes very anxious, Alex is most likely experiencing which symptoms of PTSD: Experiencing emotional numbness and detachment Experiencing hypervigilance and chronic arousal Experiencing a waking night terror Experiencing deluded thinking

The answer is experiencing hypervigilance and chronic arousal.

Emotional numbness and detachment are symptoms of PTSD, but they are characterized by a lack of emotional response and a sense of disconnection from others and one's surroundings. Alex's symptoms do not align with this description.

Hypervigilance and chronic arousal are common symptoms of PTSD. They involve being excessively alert and easily startled, as well as experiencing heightened anxiety and a constant sense of threat. Alex's behavior of being overly cautious, easily startled by noises, and becoming anxious when someone looks at her "strangely" fits this description.

Waking night terrors are not a recognized symptom of PTSD. Night terrors typically occur during sleep and involve intense fear and physical reactions, but they do not describe Alex's symptoms of being overly cautious and easily startled during waking hours.

Deluded thinking involves holding false beliefs that are resistant to reason or contrary to reality. This is more characteristic of psychotic disorders rather than PTSD. Alex's symptoms do not indicate deluded thinking.