What is the role of Himalayan rain shadow in making Ladakh a cold desert?

Correct answer: It reduces rainfall in the region

Direct answer: Option A, it reduces rainfall in the region. A rain shadow forms when moisture-bearing winds rise along a mountain, cool, and release much of their rain on the windward side. After crossing the Himalayas, the air reaching Ladakh is much drier. Ladakh is also at very high altitude, so its temperatures remain low; dryness plus cold produces a cold desert. Option A is correct because reduced precipitation is the essential rain-shadow effect. Option B is wrong because coral islands form in warm, shallow seas, not from mountain rain shadows. Option C is wrong because the Ganga delta forms from river-borne sediments near the sea. Option D is wrong because black soil is linked mainly with basaltic lava and does not result from rain shadow. Memory cue: mountains block rain; the leeward side becomes dry, and high altitude can make that dry region cold.