Which one of the following is an example...

Which one of the following is an example of negative feedback loop in humans ?

A

Secretion of tears after falling of sand particles into the eye

B

Salivation of mouth at the sight of delicious food

C

Secretion of sweat glands and constriction of skin blood vessels when it is too hot

D

Constriction of skin blood vessels and contraction of skeletal muscles when it is too cold

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The correct Answer is:

D

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