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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Polar areas have high atmospheric pressure.

Reason (R): These areas receive minimum sunshine throughout the year.

In the light of the above statements, choose the most appropriate answer from the options given below:

Solution

Correct Option: 3

Polar regions indeed have high atmospheric pressure because extremely cold air is denser and heavier than warm air, concentrating more molecules per unit volume. The reason given (minimum sunshine) is not the direct cause of high pressure; cold temperatures and dense sinking air are. So A is true but R (as an explanation) is false.

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