(A) : The small ozone layer on top of the stratosphere is crucial for human survival. (R) It absorbs ultraviolet radiations from the sun and prevents it from reaching the earth's surface and causing damage to life.

Options

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

Answer

A