Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
Identify the following individual:

Lived: 1834 - 1923
Noted for introducing a diagram used in the fields of set theory, probability, logic, statistics, competition math, and computer science. Published "The Logic of Chance" (1866), which espoused the frequency theory of probability.
Democritus
John Venn
Frank Drake
Arthur Cayley