Sweating when hot, shivering when cold, blinking when a bright light hits one's eyes... These are examples of which characteristic of life?

I think it must be response to stimuli
Explanation:
Some receptors can detect several different stimuli but they are usually specialised to detect one type of stimulus: light - photoreceptors in the eye. ... touch, pressure, pain and temperature - different receptors in the skin. taste and smell - chemical receptors in the tongue and nose

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The answer is b. hope this !