Assertion : Perspiration from human body helps in cooling the body.
Reason : A thin layer of water on the skin enhances its emissivity.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Answer

C

Explanation

When water leaves the body through perspiration energy content of molecules remained in body decreases, therefore temperature also decreases.