What Is One of the Primary Advantages of a Pretest-Posttest

Multiple Choice

What is one of the primary advantages of a Pretest-posttest nonequivalent control group design, in comparison to other nonequivalent group designs?

A) Posttest scores can help reduce threats from history effects.
B) Posttest scores can eliminate threats from history effects.
C) Pretest scores can help reduce the threat to internal validity that comes from individual differences.
D) Pretest scores can eliminate the threat to internal validity that comes from individual differences.