Answer & Explanation
A) The Supreme Court strikes down a law that bans importing inefficient automobiles
Domestic policy is an area of public policy which concerns laws, government programs, and administrative decisions which are directly related to all issues and activity within a nation's borders.
It differs from foreign policy, which refers to the ways a government advances its interests in world politics.
Hence, Option A, The Supreme Court strikes down a law that bans importing inefficient automobiles is an example of domestic policy action.