Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. In the light of the above statements, choose the most appropriate answer from the options given below.

Assertion (A):Earth's atmosphere keeps the planet warm mainly by reflecting the incoming solar radiation.

Reason (R):Greenhouse gases absorb longwave radiation emitted from the earth's surface.

ABoth A and R are correct and R is the correct explanation of A

BBoth A and R are correct but R is not the correct explanation of A

CA is correct but R is not correct

DA is not correct but R is correct ✓ Correct

Correct answer: (D) A is not correct but R is correct

Explanation

Reflecting incoming sunlight sends energy back to space and cools rather than warms, so the assertion is incorrect.

Real warming happens because gases in the air trap heat radiated from the ground.

Greenhouse gases absorb the longwave radiation leaving the surface and re-emit part of it downward, which is a true statement.

This absorbed and re-radiated energy is what raises the surface temperature, matching the greenhouse effect.

Because the assertion is wrong while the reason correctly describes the mechanism, the reason cannot explain a false assertion.

Water vapour is the most abundant greenhouse gas, while carbon dioxide is the main long-lived driver of extra warming.

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