Explanation: Western Ghats is called the "ecological hotspot of India" because it is one of the biodiversity hotspots in the world.

It has rich flora and fauna, including many endemic species found nowhere else.

It is a UNESCO World Heritage Site due to its ecological importance.


Other Options Explained:

(B) Eastern Ghats – Also rich in biodiversity but not as significant as the Western Ghats.

(C) Western Himalayas – Biodiverse but not classified as a global biodiversity hotspot.

(D) Eastern Himalayas – Also an important ecological zone but Western Ghats is more recognized as a biodiversity hotspot.


Thus, the correct answer is (A) Western Ghats.