When Comparing Two Groups in Which Each Participant Gets a Score

Multiple Choice

When comparing two groups in which each participant gets a score for each level of the ordinal independent variable (a within-groups design) , the best nonparametric test to use is the:

A) paired-samples t test.
B) Mann-Whitney U test.
C) Wilcoxon signed-rank test.
D) Kruskal-Wallis H test.