Which group of people was at the very bottom of India's caste system ?

A, Untouchables

Explanation:

The cast system works like that and the untouchables are the bottom of the caste

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.

the structure was most likely used for;

c. playing a ball game with stone hoops