A response of the whole organism involving physiological arousal, expressive behaviors, and conscious experience is known as

• A. Satiation
• B. Homeostasis
• C. Refractory period
• D. Emotions

Answer: (D)

An emotion is a response that involves the whole person: the body's arousal system activates, expressive behaviors appear, and we have a subjective feeling. This integration of physiological changes (like increased heart rate), outward signals (such as facial expressions), and conscious experience (the feeling of fear, joy, sadness, etc.) is what defines an emotional response. For example, fear can raise the heart rate, show widened eyes or a tense posture, and be experienced as the feeling of being afraid. The other terms refer to different concepts: satiation is the fullness after eating, homeostasis is maintaining internal balance, and the refractory period is a recovery phase after a neuron fires.