Which action is an example of domestic policy

A. A governor decides against running for a second term.

B. The president negotiate a peace treaty between two warring nations.

C. Congress passes a law that grants tax credits for installing solar panels.

D. The supreme court strikes down a law that bans importing inefficient automobiles

D

Explanation:

Domestic Policy refers to the internal decisions of a Gov't that are related to the administration of the country's affairs, differentiated from its foreign Policy, which is the one that refers to the relations and international organizations.

As the prohibition of smoking in public facilities only affects the inhabitants of that particular state, it's a clear example of domestic policy.

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immigrants from northern and western europe continued coming as they had for three centuries, but in decreasing numbers