What promoted India to return to purely Indian named places in the early 2000s? A desire to erase traces of British colonial influence To make them easier to pronounce for foreigners To showcase cultural diffusion in the region To attract businesses interested in outsourcing

I think the best answer would be "a desire to erase traces of British colonial influence"

Indian returned to purely Indian named places started in 1947 and is still continually happening right now. Locals still call the names of some places as to the original name such as Mumbai; locals call it Bombay also with the presence of Bombay High Court.