Answer:
B. To increase national security
Explanation:
They needed a better rocket one more advanced to to keep the U.S safe
The United States and the Soviet Union began an experiment to improve the V-2 rocket for national security.
The V-2 is a liquid-propellant rocket was developed by Germany during WWII.
Both the soviet and United States worked together on this rocket to increase national security.
National security became a bigger issue from the 1960s onward.
National security lowers the risk of terrorist or other attacks that will harm the nation and its people.
Thus option B is the correct answer.
Learn more about the Soviet Union here:
brainly.com/question/25774915
