Respuesta :
A justification for the increase in US defense spending in the Cold War was The US needed to develop more and better weapons to prevent an attack.
Why did U.S. Defense spending increase?
The Cold War was a time of heightened tensions between the two superpowers being the Soviet Union and the U.S.A.
The U.S. therefore had to increase defense spending to ensure that it had enough weapons to defend itself if the Soviet Union or other unfriendly nations attacked.
In conclusion, option A is correct.
Find out more on the Cold War at https://brainly.com/question/11474598.