To help other people realize something that might not be common sense to them.
The options to your Question are:
a) Saturday Night Massacre
b) Executive Privilege Firings
c) Nixon Cover-Up
d) Watergate Scandal
The correct answer is Option a. Saturday Night Massacre refers to President Nixon's order to fire several of his staff members who refused to follow his orders. The exact origin of this phrase could not be tracked but it first appeared in an Article of Washington Post two days following the event and the author of that article stated in the article that the event was already being termed as Saturday Night Massacre.
C is the correct answer. All of the attempts were failed.
In April 1980, frustrated with the slow pace of diplomacy (and over the objections of several of his advisers), Carter decided to launch a risky military rescue mission known as Operation Eagle Claw. The operation was supposed to send an elite rescue team into the embassy compound. However, a severe desert sandstorm on the day of the mission caused several helicopters to malfunction, including one that veered into a large transport plane during takeoff. Eight American servicemen were killed in the accident, and Operation Eagle Claw was aborted.
President Carter continued to attempt to secure the hostages' release before his presidency's end. On 20 January 1981, minutes after Carter's term ended, the 52 US captives held in Iran were released, ending the 444-day Iran hostage crisis.