Immediately after the attacks of September 11, 2001, many people around the world

Afelt uncomfortable voicing support for the United States.
Bshocked by the events and condemned the attacks.
Cdeclared war on al-Qaeda and other terrorist organizations.
Dremained silent to avoid attacks by al-Qaeda on their soil.

I would say that the best option from the answers given for the question: Immediately after the attacks of September 11, 2001, many people around the world, would be: B: felt shocked by the events and condemed the attacks.

Explanation:

The attacks on the Twin Towers, in New York City, on September 11, 2001, caught the entire world unawares and generated feelings of outrage and indignation. So much so, that many dedicated themselves to condemn all Muslims and dedicated themselves to their persecution, naming them all potential terrorists. However, world powers, and countries, did not openly declare war on anyone, and only a few supported the invasion of Iraq, by the U.S as a means to defeat al-Qaeda and other terrorist organizations.