Animal research is critically important for the study of variables that can't be _____ ethically in human subjects.
A)controlled
B)manipulated
C)randomized
D)bias-free

Name: Animal research is critically important for the study of variables that can't be _____ ethically in human subjects. A)controlled B)manipulated C)randomized D)bias-free
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Question

Quizplus · Accepted Answer

Manipulating variables in animal research allows scientists to study effects that cannot be ethically created or controlled in human subjects.

Animal Research Is Critically Important for the Study of Variables