Which of the following can be an indication of the flight response?

The flight response is a fundamental aspect of the body's natural reaction to perceived danger, part of the fight-or-flight response. When someone exhibits restlessness and looks for escape, it signifies a heightened state of anxiety and a motivation to evade a threatening situation. This behavior reflects a psychological and physiological readiness to leave or avoid confrontation, which is characteristic of the flight response.

In contrast, intense focus on the threat indicates more of a fight response, as it shows engagement rather than avoidance. Confronting danger head-on is clearly aligned with fighting rather than fleeing, and a sense of calmness would typically suggest a lack of immediate threat or a response that is more composed and less reactive. Thus, the behaviors indicated by the correct answer align directly with the instincts and characteristics associated with fleeing from danger.