What Is the Main Advantage of Conducting an Experiment Using

Multiple Choice

What is the main advantage of conducting an experiment using a within-subjects design rather than a between-subjects design?

A) A within-subjects design eliminates the need for pilot testing.
B) A within-subjects design controls more extraneous variables.
C) A within-subjects design does not require manipulation of an independent variable.
D) A within-subjects design prevents carryover effects.