The correct answer is C) the Affordable Care Act.
The historical event that is the best example of domestic policy is the Affordable Care Act.
This act is a great and best example of domestic policy because it was signed to help poor people in the United States. The Affordable Care Act (ACA) was enacted in March 2010 and was one of the most important creations of US President Barack Obama. ACA aimed to provide affordable health insurance to people through subsidies and the expansion of the medical program to cover go adults with low income.
The other options of the question were A) the Cuban Missile Crises. B) the Monroe Doctrine. D) the Marshall Plan.