Correct Option
Musk deer (Moschus spp.) are primarily found in high-altitude Himalayan forests and alpine shrublands. Both Askot Wildlife Sanctuary and Gangotri National Park are located in the Himalayan region of Uttarakhand, offering the requisite high-altitude terrain and alpine vegetation that constitute the natural habitat for musk deer.
Incorrect Options
Kishanpur Wildlife Sanctuary is situated in the Terai region of Uttar Pradesh, characterized by grasslands and wetlands. This habitat is suitable for species such as tigers and swamp deer but not for the high-altitude dwelling musk deer.
Manas National Park, located in Assam, represents a low-lying riverine and grassland ecosystem. This environment differs significantly from the high-altitude forested and alpine habitats preferred by musk deer, making it unsuitable for their natural presence.
Therefore, options including Kishanpur Wildlife Sanctuary or Manas National Park are incorrect as they do not align with the natural habitat requirements of musk deer.