Which of the following differentiates a matched-subjects design from a within-subjects design? a. The matched-subjects design uses only one group of participants. b. The matched-subjects design...

Which of the following differentiates a matched-subjects design from a within-subjects design?

a. The matched-subjects design uses only one group of participants.

b. The matched-subjects design removes individual differences from the variance.

c. The matched-subjects design reduces the likelihood that individual differences can become a confounding variable.

d. The matched-subjects design uses a different group of participants for each treatment condition.