Following the designation of a new drug as an "investigational new drug", there are _____ phases of testing on humans

a. one
b. two
c. three
d. four


d
Rationale: a. There are three other phases of drug testing.
b. There are two other phases of drug testing.
c. There is another phase of drug testing.
d. There are four phases of drug testing that occur following the designation of a drug as an "investigational new drug".

Health Professions

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Fill in the blank(s) with correct word

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