The correct answer is alternative A) "Richard Nixon resigned".
Watergate was a political scandal that took place in 1972, when 5 criminals broke-into the Democratic National Committee headquarters in Washington D.C..
President Nixon's administration tried to cover up its involvement in the case, but after the criminals were caught the conspiracy was exposed.
The US Congress investigated the case, and the scandal led to the discovery of multiple cases of abuses of power by members of the administration. Soon after, former President Nixon resigned.
