During the final years of World War II, how did the Allies gain control of the Atlantic Ocean?

The Allies gained the upper hand in the Battle of the Atlantic by improving their ability to find and attack German U-boats. Better antisubmarine technology, including radar and sonar, helped Allied ships and aircraft detect submarines and protect convoys. This makes “They used better antisubmarine technology” the correct choice.

AI-written and checked against the verified answer.