Which of the following are the most likely places to find the musk deer in its natural habitat ? 1. Askot Wildlife Sanctuary 2. Gangotri National Park 3. Kishanpur Wildlife Sanctuary 4. Manas National Park Select the correct answer using the code given below :

The correct option is (a) because Askot Wildlife Sanctuary and Gangotri National Park are located in the high-altitude Himalayan regions of Uttarakhand, which provide the alpine and sub-alpine habitat essential for the musk deer. Kishanpur (Uttar Pradesh) and Manas (Assam) are incorrect as they are situated in lowland Terai and tropical/sub-tropical regions respectively, which do not support this high-altitude species. The core concept tested is the biogeographical distribution and specific habitat requirements of endangered fauna in India.