Final answer:
The Manhattan Project was a US government project to develop atomic bombs during World War II.
Step-by-step explanation:
The correct answer is a) Manhattan Project. The Manhattan Project was a US government project during World War II that aimed to develop an atomic bomb. The project was created to harness atomic energy and create a weapon powerful enough to level large territories. It was led by physicist J. Robert Oppenheimer and resulted in the successful development and testing of the first atomic bombs.
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