Assertion (A) Western Bihar experiences higher temperature than Eastern Bihar in the month of April. Reason (R) Norwester brings down temperature in Eastern part.

The correct answer is: D. Both are correct and R is the correct explanation of A.

The assertion (A) is true because Western Bihar is located in the Indo-Gangetic Plain, which is a hot and dry region. The reason (R) is also true because the Nor’wester is a cold, dry wind that blows from the northwest during the winter months. The Nor’wester brings down the temperature in Eastern Bihar, which is located in the foothills of the Himalayas.

Here is a more detailed explanation of each option:

• Option A: A is true but R is false. This is not correct because the Nor’wester does bring down the temperature in Eastern Bihar.
• Option B: A is false but R is true. This is also not correct because the assertion (A) is true.
• Option C: Both are correct but R is not the correct explanation of A. This is not correct because the Nor’wester is the correct explanation of why Western Bihar experiences higher temperature than Eastern Bihar in the month of April.
• Option D: Both are correct and R is the correct explanation of A. This is the correct answer because the assertion (A) is true and the reason (R) is the correct explanation of why Western Bihar experiences higher temperature than Eastern Bihar in the month of April.