Answer:
More people volunteered to serve in the United States military
Explanation:
The statement BEST reflects the patriotic situation after the September 11 Attacks of 2001 when more people volunteered to serve in the United States military.
The US faced a terrorist attack twenty years ago in which many people dies. It boosts the sense of patriotism in the youth of the US as around 72,908 people were enlisted who had the desire to join the army.
Therefore, citizens wanted to serve their nation by contributing to their volunteer activities for the nation.
Learn more about the US military here:
https://brainly.com/question/373437