According to the preamble, which responsibility of the constitution most relates to the United States interactions with other nations

To provide for the common defense

Explanation:

This responsibility functions as the promise to keep the United States, its land and people safe under the threat of foreign attack, under one unified defense. This is the only function listed that directly correlates to the US and foreign relations, specifically in the form of a threat or attack.

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )