please help I dont know this

Question

Right after they occurred, the terror attacks on September 11 were compared regularly to which historical event?

A. 

Battle of Britain

B. 

Hiroshima

C. 

Manhattan Project

D. 

Pearl Harbor

E. 

There were no historical comparisons.

Answer 1

Hello! One way to go about answering this question would be to think about what the September 11 attacks were-- an attack on America. Which of these others events were also an attack on America?