Answer:
Option: All the president's conversations and phone calls were recorded.
Step-by-step explanation:
The Watergate Scandal caused a disturbance in Americans. Breaking in the Watergate complex and subsequently conceal evidence by President Nixon led the FBI to investigate the situation.
During the investigation, the FBI found the Nixon tapes which were part of the covert recordings of his conversations and phone calls in the Oval Office. It revealed that the president had been part of an unlawful act as he was covering up from the beginning.