Which of the following is true of carter’s attempt to free the hostages in iran? carter sought from the united nations. carter aided the mujahideen in fighting the soviets. carter opposed a boycott of iranian goods carter increased trade with the iranians.

option C is the best one to be selected

If you wanna check..
The unsuccessful attempt occurred in April and called first for the American president Carter to publicly promise not to "impose additional sanctions" on Iran. In exchange custody of the hostages would be transferred to the government of Iran, which after a short period would release the hostages—the Iranian president and foreign minister both opposing the continued holding of the hostages. To the American's surprise and disappointment, after Carter made his promise, President Banisadr added additional demands: official American approval of resolution of the hostage question by Iran's parliament (which would leave the hostages in Tehran for another month or two), and a promise by Carter to refrain from making "hostile statements". Carter also agreed to these demands, but again Khomeini vetoed the plan. At this point President Banisadr announced he was "washing his hands of the hostage mess".

The answers is most likely b since during a war the other options are just nice to have. but b is needed.