What was the purpose of ziggurats in sumer? a. they were monuments to previous kings. b. they were homes for wealthy sumerians. c. they were conduits for water transport. d. they were temples for gods and goddesses.

D.) they were temples for gods and goddesses.
The Sumerian people worshipped many gods. This type of belief is called polytheism. Each city-state, though, claimed one god as its own. To honor this god, the city-state build a large temple called a Ziggurat. A temple is a building used to worship a god or many gods. At first, the priests of the ziggurat ruled the city-states.

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