The correct answer is James Meredith.
Thurgood Marshall was a lawyer in the Brown vs. Board of Education case and later a judge on the Supreme Court.
Neil Armstrong was the first American astronaut to land on the moon in 1969.
Jack Ruby was the man who killed Lee Harvey Oswald after he was charged with killing John F. Kennedy in November of 1963.
This shows that the only correct answer can be James Meredith.
