The correct answer is option 4, Silent Valley. The lion-tailed macaque is a species of monkey that is known for its distinctive appearance, with a mane of hair that resembles a lion. This species is native to the Western Ghats mountain range in southwestern India. The Silent Valley National Park, located in the state of Kerala, is one of the few places where the lion-tailed macaque can be found in its natural habitat.

Option 1, Garo Hills, is not the correct answer. The Garo Hills are located in the northeastern part of India, in the state of Meghalaya. This area is not known to be a natural habitat for the lion-tailed macaque.

Option 2, Kullu Valley, is also not the correct answer. The Kullu Valley is situated in the Indian state of Himachal Pradesh, in the western Himalayas. The lion-tailed macaque is not known to be found in this region.

Option 3, Nallamalai Hills, is also not the correct answer. The Nallamalai Hills are part of the Eastern Ghats mountain range, located in the state of Andhra Pradesh, in southern India. The lion-tailed macaque is not known to inhabit