In the Later Vedic period, who was the god of Shudras?

The correct answer is Option (3) - Pushana

In the Later Vedic period, which followed the Early Vedic period in ancient India, Pushan was regarded as the god associated with the Shudras.

Pushana, the god of the sun, journeys, shepherds, and travelers, was sometimes seen as a protector of the Shudras, the social class associated with manual labor and service.