Will give brainliest.

who was thomas aquinas?

a.
a thirteenth-century descendant of charlemagne who used reason and logic to end the crusades

b.
a thirteenth-century author who used reason and logic to explain christian beliefs

c.
a thirteenth-century scientist who tried to prove that god did not exist

d.
a thirteenth-century warrior who invaded palestine to regain control of the holy land for christians