Which action is an example of domestic policy?

AThe president announces the signing of a trade agreement with an ally.
BThe Supreme Court upholds a controversial law on the military draft.
CCongress approves a declaration of war on a foreign enemy.
DA governor signs a law that bans smoking in public restrooms.

Verified Answer :

The only action from the list that would be an example of domestic policy would be "d. A governor signs a law that bans smoking in public restrooms," sine this only applies to citizens within the United States. 

Answer: d. A governor signs a law that bans smoking in public restrooms.

Domestic policy refers to those policies that only affect people of the United States. This is in contrast to foreign policy, which affects how the United States interacts with other countries. Out of these options, the last one is the only one that only has a domestic impact. All of the other options involve other countries, or international policy, such as declarations of war and human rights issues.