The correct answer is: a) The Nilgiris.
The Nilgiris are a mountain range in southern India. They are known for their unique Shola forests, which are a type of tropical montane rainforest. The Shola forests are home to a variety of plant and animal species, including many that are found nowhere else in the world.
The Palani Hills are a mountain range in western India. They are known for their temples and their wildlife, including tigers, leopards, and elephants.
The Anamalai Hills are a mountain range in southern India. They are known for their wildlife, including tigers, leopards, and elephants.
The Kolli Hills are a mountain range in southern India. They are known for their temples and their coffee plantations.
The Nilgiris are the only hill station region that is known for its unique Shola forests.