During World War II in Europe, American troops played a significant role in D-day Invasions. Option B is correct.
D-Day refers to the day when the Battle of Normandy kicked off stemming from the Allied liberation of Western Europe from Nazi Germany’s control.
The battle initiated on June 6, 1944 when some 156,000 American, British and Canadian forces landed on five beaches along a 50-mile stretch of the heavily fortified coast of France’s Normandy region.