Question

How did Sir Arthur Conan Doyle know Dr. Joseph Bell?   A. Sherlock Holmes introduced them.   B. Dr. Bell was a famous criminal.   C. Dr. Bell worked for Doyle.   D. Dr. Bell was Doyle's teacher.

Answer 1

D. Dr Bell was one of the professors at the University of Edinburgh Medical School. Doyle was studying to become a doctor there and that is where he met Dr. Bell. 

Answer 2

D. Dr Bell was one of the professors at the University of Edinburgh Medical School i did a test on this Sherlock Holmes test and i passed it so i made sure just in case if somebody asked me theses ?'s i would rember right them down and i would know the answer hope i helped :P