Which of these was a U.S. president in the 1970s?

When Gerald R. Ford took the oath of office on August 9, 1974, he declared, “I assume the Presidency under extraordinary circumstances…. This is an hour of history that troubles our minds and hurts our hearts.” It was indeed an unprecedented time. He had been the first Vice President chosen under the terms of the Twenty-fifth Amendment and, in the aftermath of the Watergate scandal, was succeeding the first President ever to resign.

Source: White House