What was the house of wisdom?

a. a meeting place for the advisors to the caliphs

b. a hospital where brain surgery was performed

c. a research library in baghdad

d. a place where muslim philosophers met to contemplate life

The correct answer is (d.) a place where Muslim philosophers met to contemplate life. The House of Wisdom was actually a major intellectual center for well-known scholars during the Golden Age that made many remarkable contributions to the diverse fields.