An instance of a [[1]] is the blinking of an eye.

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answer is SPINAL REFLEX.

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Detailed Solution

An instance of a spinal reflex is the blinking of an eye.

Reflexes are involuntary actions in response to stimuli. They are rapid, automatic responses to a stimulus that helps protect the body from harm.

A spinal reflex is a type of reflex that occurs automatically in response to a stimulus without involving the brain. The blinking of an eye is a classic example of a spinal reflex. When something suddenly comes close to the eye, such as a bug or a speck of dust, the muscles around the eye will automatically contract to protect it. This reflex is mediated by a pathway that goes through the spinal cord, bypassing the brain. Therefore, the blinking of an eye is an example of a spinal reflex.

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