Which statement best highlights US involvement in WWII before officially joining the war?

The United States adopted a neutral position regarding the conflictive events that were already occurring in Europe since the 1930s. They made their stance official with a neutrality act passed by Congress in 1930. However, this stance abruptly changed as two key events occurred:

The attack of German Submarines against American vessels. The attack of Pearl Harbor by the Japanese in 1941.

After the attack of Pearl Harbor, the US decided to enter the war.