Answer:
B. Emerged as an area of renewed anxiety for some Americans in the wake of the September 11 attacks.
Step-by-step explanation:
The United States government adopted actions to improve its response to terrorism after 9/11. In the borderlands of the Southwest, Americans got anxious and insecure because of the terrorist attack. Efforts were done to restore a sense of security after the attack on the World Trade Center. The World Trade Center attack on September 11, 2001, where 2,977 people were killed.