The correct answer is (b), Western Ghats.
The Western Ghats, also known as the Sahyadri Hills, are a mountain range that runs along the western coast of India. They are the longest continuous mountain range in India, and they are home to a wide variety of plant and animal life. The Western Ghats are also an important source of water for the Indian subcontinent.
The Shiwalik Range is a mountain range that runs along the northern edge of the Indo-Gangetic Plain. It is a relatively low-lying range, and it is not as well-known as the Western Ghats.
The Mahadeo Hills are a mountain range that is located in the state of Maharashtra, India. They are a part of the Western Ghats, and they are home to a number of important temples.
The Vindhyachal is a mountain range that is located in central India. It is a part of the Deccan Plateau, and it is the dividing line between the northern and southern parts of India.