I believe the answer is c
The hostage crisis in Iran took place over a period of 444 days, during which a group of Iranian students took 66 diplomats and citizens of the United States of America (USA) hostage. The crisis began on November 4, 1979 and lasted until January 20, 1981.
The crisis was described by the Western media as a "revenge and mutual incomprehension". In Iran, the taking of hostages was widely seen as a blow against the United States. In the United States, and in general the West see hostage-taking as an outrage on the part of the Islamist movement that violated the principle of international law on immunity and inviolability of diplomats and their embassies.
In 1980, the death of the Shah (July 27) and the invasion of Iran by Iraq in September made Iran more prone to the resolution of the hostage crisis. In the US, Carter lost in November 1980 the presidential re-election for the benefit of Ronald Reagan. Most analysts believe that Carter's mistakes in trying to solve the crisis played an important role in his defeat.
If the citizens were not required, no one may want to. On jury, you may have a case that may take a long time and you may end up sentencing someone to death. It is likely if citizens were not required that no one would want to volunteer.
