Answer:
D) prior to the Allied invasion at Normandy, France.
Step-by-step explanation:
To this point Japan, Germany and Italy had already formed the Axis and were ready to start conquering Europe and Asia, they were already invading different places of the world, Poland was already under Germany control, and several parts of continental Asia were already being attacked by Japan, at that point France didn´t have allies, and it wasn´t untill they invaded France that the allies came together.