A researcher conducted an experiment to determine which TV network's Thursday night programming makes people laugh the most. The same group of participants watched NBC, ABC, and CBS from 8pm-10pm on three consecutive Thursdays with an audio recorder. The researcher then listened to the recordings and counted the number of times each participant laughed. What statistical test should this researcher use?

a. Independent-measures t-test

b. Paired-samples t-test

c. One-way ANOVA

d. Repeated-measures ANOVA