__________ is firsthand knowledge or opinions, either your

What event marked the end of “pure and sanitized” reporting on Vietnam and also showed the public that something was wrong in Vietnam?:

a) Richard Nixon’s control of what the press published; b) Walter Cronkite’s support of the Washington Post’s coverage of Watergate; c) Inaccurate reports on death tolls and strategic bombings via “the Five O’Clock Follies”; d) the president’s bombing of Laos and Cambodia; e) all of the above

The frequency in cycles per second of the vocal tones is called "vocal ."

Fill in the blank(s) with the appropriate word(s).