Answer:
[tex]\boxed {\boxed {\sf C. \ Developed \ a \ new \ weapon \ designed \ to \ gain \ a strategic \ advantage \ over \ enemies}}[/tex]
Explanation:
The Manhattan Project was started during World War II with the goal of creating nuclear weapons for the Allies (the 4 major were the United States, England, the Soviet Union, and France) in the war.
It was successful because it developed the Little Boy bomb dropped on Hiroshima and Fat Man dropped on Nagasaki in August 1945.
So, it was created for weapons that would provide an advantage, making choice C correct.
