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. developing methods for its mass production and commercial distribution.
C. discovering that it could be used to treat streptococcal blood infections.
D. effectively using the antibacterial agent known as sulfanilamide.
E. discovering the antibacterial properties for which the drug was named.
Answer: B
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