Answer:
It was used as a baptizing pool. Sure, some people used it as an actual bath, but it was used in ways for Hindu baptizing.
Explanation:
The Great Bath dates to the 3rd-millennium BCE and is believed to have been used for ritual bathing. The Great Bath is part of a large citadel complex that was found in the 1920s during excavations of Mohenjo-Daro, one of the main centers of the Indus civilization.