Question

The year 1968 brought an end to the careers of

I. Lyndon B. Johnson
II. Martin Luther King, Jr.
III. Robert F. Kennedy A. I B. II C. I and II D. I, II, and III

Answer 1

All of them. Johnson decided not to seek re-nomination as President, and was succeeded by Richard Nixon in the election of 1968. MLK and RFK were both assassinated in 1968.