Following World War II, American scientists made a critical contribution to the development of penicillin by
A. demonstrating the value of antiseptic solutions to prevent infection.
B. first using the antibacterial agent known as sulfanilamide.
C. finding methods for its mass production and commercial distribution.
D. discovering the antibacterial properties for which the drug was named.
E. discovering penicillin could be used to treat streptococcal blood infections.
Answer: C