Explanation:

- The Deccan Plateau is a large plateau in India, shaped roughly like a triangle.

- It is bounded by the Western Ghats on the west and the Eastern Ghats on the east.

- The northern boundary of the Deccan Plateau is formed by mountain ranges.

Option 1: Aravalis

- The Aravalis are a range of mountains in the northwest of India.

- They do not form the boundary of the Deccan Plateau.

Option 2: Satpura

- Satpura Range is located in central India.

- It plays a part in dividing the Deccan Plateau from the northern regions.

Option 3: Western Ghats

- These are along India’s west coast, forming the western boundary of the Deccan Plateau.

- Incorrect for northern boundary.

Option 4: Vindhya

- The Vindhya Range is historically considered to be the boundary of the northern part of the Deccan Plateau.

Correct Answer: Option 4: Vindhya