Which of the following is an instinctive response to danger?

The response known as "Fight Mode" reflects an instinctive reaction animals have when they perceive a threat. This mode is part of the animal's natural survival instincts, allowing it to either confront or defend against potential danger. In this state, animals prepare to either engage with the threat physically or escape.

The fight-or-flight response, which encompasses Fight Mode, is crucial for an animal's survival in the wild and is driven by physiological changes such as increased heart rate, adrenaline production, and heightened alertness. This instinctive behavior enables the animal to react quickly to threats, making it a fundamental survival mechanism across species.

Calm Mode typically represents a state of relaxation and stress-free behavior, while Defensive Mode usually indicates a more protective posture that might not involve the proactive approach of fighting. Overactive Mode suggests hyperactivity or agitation but does not specifically refer to the primal instinct to confront danger directly as Fight Mode does. Hence, Fight Mode is clearly the instinctive response to danger in the context of the question.