Aforeign-policy goal that president carter achieved was maintaining control of the panama canal zone. signing the salt ii treaty with china. promoting détente with communist nations. winning the nobel peace prize in 1978.

C. promoting détente with Communist nations.

Carter's presidency was characterized, among other endeavors, by the efforts to ease the Cold War tension with the Soviet Union, whereby trade cooperation multiplied, hence the foreign policy name "Détente", to reduce hostilities, although it didn't last forever, it was cool for around a decade.

Thereby the answer is: "Promoting Detente with Communist Nations".

Explanation:

yes they have. but is this a true false question? if it is, the answer is true.