Question

what improvement made to penicillin during world war ii saved many soldiers lives?
different types of penicillin were developed.
stronger types of penicillin were developed.
larger quantities of penicillin were made.
smaller quantities of penicillin were made.

Explanation:

During World War II, the key improvement was the ability to produce larger quantities of penicillin. This was crucial as there was a high demand for the antibiotic to treat wounded soldiers. The development of different or stronger types (while possible in general penicillin research over time) was not the main factor during the war in terms of saving soldiers' lives in the context of quantity - need. Making smaller quantities would not help in saving lives when there was a large number of injured.

Answer:

Larger quantities of penicillin were made.