What event led to the United States bombing Afghanistan on October 7, 2001?

Question

Responses
A Ronald Reagan telling Gorbachev "Tear down this wall!"Ronald Reagan telling Gorbachev "Tear down this wall!"
B Taking of American hostages in TehranTaking of American hostages in Tehran
C The Soviet invasion of AfghanistanThe Soviet invasion of Afghanistan
D Attacks on the World Trade Center and the Pentagon

Answer 1

D Attacks on the World Trade Center and the Pentagon led to the United States bombing Afghanistan on October 7, 2001.