Penicillin was discovered by
-
Edward Jenner
-
Alexander Flemming
-
Louis Pasteur
-
Robert Koch
B
Correct answer
Explanation
Penicillin was discovered by Alexander Fleming (note the spelling in option B has an extra 'm' but refers to the same person) in 1928 when he observed that mold prevented bacterial growth in his petri dishes. This revolutionized medicine and earned him the Nobel Prize.