What type of place is Palghat Gap in the relief of the Western Ghats?

Correct answer: Major low natural passage

The Palghat Gap, or Palakkad Gap, is a broad and relatively low break in the otherwise continuous Western Ghats. It lies between the Nilgiri Hills to the north and the Anaimalai Hills to the south, providing a natural passage between Kerala and Tamil Nadu. Because it is lower than the surrounding ranges, it has supported transport, settlement and movement between the east and west sides of southern India. The key physical identity asked for is therefore a major low natural passage, making option B correct. It is not a Himalayan glacier, an Aravalli summit or an eastern coastal delta; those descriptions refer to different landforms and regions.