The antibiotic penicillin was discovered by:
Alexander Fleming
The correct option is (A):
Explanation of the correct option:
Explanation of the incorrect options:
Option (B):
Ernst Boris Chain worked on the process of the development of penicillin in sufficient quantities.
Option (C):
Option (D):
Howard Florey helped produce penicillin in enough quantities to make it readily available for people.
Final Answer: The antibiotic penicillin was discovered by Alexander Fleming.