Assertion (A): When scuba divers come towards surface, their capillaries get blocked which is painful and dangerous to life.
Reason (R): These occurred release of dissolved gases as the pressure decreases and leads to the formation of bubbles of nitrogen in the blood.

Options

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

Answer

A

Explanation

When scuba divers come towards the surface, pressure gradually decreases. This releases the dissolved gases and leads to the formation of bubbles of nitrogen in the blood. Hence, both assertion and Reason are correct and Reason is the correct explanation of Assertion.