The answer is 2 because they are not meaning it in a violent way so it's not 1, there is no sign of disinterest so it's not 4, and it's not talking about acceptance so it can't bring 3. Therefore the answer is 2.
Using the answer choices provided, D would be the most feasible one in this case.
Answer: A. To focus on how far the nation has come since its founding
Explanation:
A milestone refers to a significant event in the life of a person or thing that marks a change from their previous status. For instance, marriage is a milestone, so also is moving out of your parent's house or having your first child.
After a milestone, a new chapter begins and it is this new chapter that President Carter was referring to. The U.S. began a new chapter when they got their freedom and President Carter is trying to bring attention to this to show how far the nation had come since its founding.
