In what way did the United States attempt to protect itself from an attack by the Soviet Union during the Cold War? through increased education spending
through increased consumer spending
through intelligence about the Soviet space program
through intelligence about the Soviet nuclear program

Correct answer is through intelligence about the Soviet nuclear program .

Explanation:

First two options are not correct of course because this led more to the strengthening of economy of United States, and was not pointed towards the Soviet Union.

Third option is not correct as this was related more to their space race that started during the 1950s.

Last option is correct as both countries were espionage each other which in some cases almost led to the war between two countries.