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

Assertion (A):Since pre-industrial times carbon dioxide has contributed the maximum to global warming.

Reason (R):Carbon dioxide has the highest Global Warming Potential (GWP).

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 ✓ Correct

DA is not correct but R is correct

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

Explanation

Carbon dioxide has indeed added the most to global warming since pre-industrial times because of its huge emission volume.

The assertion about its dominant contribution is correct.

The reason is wrong because carbon dioxide does not have the highest global warming potential.

On a per-molecule basis carbon dioxide is the reference value of one, while methane, nitrous oxide and fluorinated gases score far higher.

Its leading role comes from sheer quantity, not the strongest potential per molecule.

Methane traps far more heat per molecule but is released in smaller amounts.

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