Question

What was the "best kept secret" of WWII? Why? a) The Manhattan Project; to develop atomic weapons b) The D-Day invasion; to surprise the Axis powers c) Operation Enigma; to decode German messages d) The Lend-Lease Act; to aid Allied nations

Answer 1

Probably the manhattan project.

Step-by-step explanation:

The manhattan project had to do with nukes which no body wanted anyone knowing about.