Why are cold deserts in India not affected by the monsoon?

The correct option is: Cold deserts lie in the rain shadow of the Himalayas.

Explanation:

1. Topographical Barrier: The mighty Himalayan mountain range acts as a massive physical barrier to moisture-laden winds arriving from the Indian Ocean and the Bay of Bengal during the southwest monsoon season.

2. Rain Shadow Effect: As the southwest monsoon winds encounter the southern slopes of the Himalayas, they are forced to ascend. Rising air cools, condenses, and releases most of its moisture as heavy rainfall on the southern side of the mountains.

3. Dry Air Progression: By the time these air masses cross over the high peaks into regions like Ladakh (the cold desert of India), they have lost almost all their moisture. Consequently, these areas receive very little to no precipitation, placing them in a "rain shadow zone."

Therefore, cold deserts in India remain dry and unaffected by monsoon rains primarily because they lie in the rain shadow region of the Himalayas.