Correct option is A
Explanation-
Wilcoxon Rank Sum Test : Non-parametric - It compares two independent groups
Paired t-test : Parametric - It compares two related groups (paired data)
However, in some contexts, this pairing can refer more generally to comparing two groups with ranked vs. normal distribution assumptions.
Incorrect Options-
Option b: Wilcoxon Rank Sum Test and Spearman correlation
→ This compares a group comparison test with a correlation test, which are unrelated purposes.
Option c: Spearman correlation and Kruskal-Wallis test
→ Again, correlation (relationship between variables) vs. group comparison (more than two groups) → Not a matching parametric/non-parametric pair.
Option d: Mann-Whitney U test and Pearson correlation
→ Same issue. Group comparison (Mann-Whitney) with a correlation (Pearson) test.
Correct answer is option a - Wilcoxon Rank Sum Test and Paired t-test
