Analyze the assertion and reason regarding monsoon rainfall in Haryana and the role of the Aravalli range.

Here's the analysis of the assertion and reason:

• Assertion A: "The south-western districts of Haryana receive significantly less monsoon rainfall compared to the north-eastern districts." This statement is true. The south-western parts of Haryana are drier and receive less rainfall than the north-eastern parts, which are closer to the Himalayas and receive more moisture from the monsoon.

• Reason R: "The Aravalli range in the south-west acts as a massive orographic barrier, blocking the moisture-laden winds of the Bay of Bengal branch." This statement is false. The Aravalli range is located in the south-western part of Haryana and Rajasthan. While it does act as an orographic barrier, it primarily influences the Arabian Sea branch of the monsoon, not the Bay of Bengal branch. The Bay of Bengal branch moves northwestward across the Ganga plains and brings rainfall to the eastern and northern parts of Haryana, but its influence diminishes significantly by the time it reaches the south-western districts. The Aravallis are generally parallel to the direction of the Arabian Sea branch, allowing winds to pass without significant obstruction, and they are not a major barrier for the Bay of Bengal branch in this region. The low rainfall in south-western Haryana is more due to its distance from both monsoon branches and its semi-arid climate.

Since Assertion A is true and Reason R is false, the correct option is (C).

C) A is true but R is false.