Among the four options, three have the same property. Find the odd one out.

Mole Hills

The odd one out is: Mole Hills.

Explanation:

⇒ Nilgiri Hills, Aravali Hills, and Shivalik Hills are all geographical features, mountain ranges in India.

⇒ Mole Hills, on the other hand, typically refer to small mounds of earth created by moles in the ground. Unlike the other options, it doesn't represent a large mountain range.