In the Middle Ages, European monarchs claimed to rule by "divine right". What purpose was
served by this claim?
A. It enabled the separation of church and state.
B. It enabled rulers to seize church lands.
C.
It demonstrated that religion was stronger than
political power.
D. It strengthened the monarch's authority to
rule.

D. It strengthened the monarch's authority to  rule.

Explanation:

The divine right was essentially the foundation in which the government was in place. Remember, many people in the European lands were deeply religious. To connect the standing government with the permission of the divine, would ensure that the people follow them for fear of the wrath of the God(s).

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