The strategic offensive in the Allied drive against the Axis powers in Europe in World War II was the Normandy invasion. The correct option is Normandy invasion.
Also known as Operation Overlord, the Normandy invasion took place on June 6, 1944. It involved the landing of Allied forces on the beaches of Normandy, France, with the objective of establishing a foothold in Western Europe and ultimately liberating occupied France from German control.
The invasion marked a major turning point in the war and paved the way for the eventual defeat of Nazi Germany.