Question

Which major event took place on September 11, 2001?

A. The United States began Operation Iraqi Freedom.
B. Terrorists detonated bombs in the Pentagon and the towers of the
World Trade Center.
C. The Global War on Terror was officially started against Al-Qaeda.
D. Nineteen terrorists hijacked four planes to fly into buildings in the
United States.

Answer 1

The last one is your answer hope it helped ya..

Step-by-step explanation: