The major way that experimentation differs from ex post facto research is that in experimentation the researcher:
A) Uses control groups but not ex post facto research
B) Uses variable manipulation but does not in ex post facto research
C) Uses independent variables but not in ex post facto research
D) None of the above

Question

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The Answer of The major way that experimentation differs from ex post facto research is that in experimentation the researcher:
A) Uses control groups but not ex post facto research
B) Uses variable manipulation but does not in ex post facto research
C) Uses independent variables but not in ex post facto research
D) None of the above

The Major Way That Experimentation Differs from Ex Post Facto