The common religion of the sumerians:
a. included many gods, with a different god worshiped in each city-state.
b. required city-states to settle their differences peacefully.
c. was an early form of monotheism that influenced other peoples. guaranteed free food for the poorest members of society.
d. was the only aspect of sumerian society that survived the society’s collapse.

a- included many gods, with a different god worshiped in each city-state.

Explanation:

Hello!

Throughout history, wars between the various Sumerian cities were practically constant.

The religious beliefs of the Sumerians were strongly linked to the worship of natural elements. This is the reason why they believed in numerous gods.

Many of his myths and religious stories served as inspiration to neighboring cultures, which adopted them with some modifications. But without a doubt, the greatest legacy of the Sumerians is their numerous inventions, among which we can mention wheel, potter's wheel and beer.

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explanation:

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d is the best answer for this question.