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: 1596 - 1650
One of the great philosophers, they advocated skepticism in the scientific method and created new mathematical ideas including the independent founding of analytical geometry. A coordinate system is named in their honor.
Gregor Mendel
Grace Hopper
Brahmagupta
René Descartes