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

Answer

C

Explanation

When water leaves the body through perspiration energy content of molecules remained in body, decreases, therefore temperature also decrease. Thus, perspiration form human body helps in cooling the body.