Why did the United States and its allies develop nuclear weapons?

(1 point)
During World War II, the U.S. and its allies were afraid that Nazi
Germany would develop nuclear weapons capable of killing many
people. The Allies knew that to have nuclear weapons meant having
powerful weaponry that would give them a technological advantage
over their enemies.
During World War II, the Soviet Union and its allies were afraid that
Nazi Germany would develop nuclear weapons capable of killings
many people. The Allies knew that to have nuclear weapons meant
having powerful weaponry that would give them a technological
advantage over their enemies.
During World War II, the U.S. and its allies were afraid that the Soviet
Union would develop nuclear weapons capable of killing many
people. The Allies knew that to have nuclear weapons meant having
powerful weaponry that would give them a technological advantage
over their enemies.
During the Cold War, the U.S. and its allies were afraid that the Soviet
Union would develop nuclear weapons capable of killing many
people. The U.S. knew that to have nuclear weapons meant having
powerful weaponry that would give them a technological advantage
over their enemies.

The answer is the second option: During World War II, the Soviet Union and its allies were afraid that Nazi Germany would develop nuclear weapons capable of killing many people. The Allies knew that to have nuclear weapons meant having powerful weaponry that would give them a technological advantage over their enemies.