question: Q:A group of researchers is looking to study the effect of body weight on blood pressure in the elderly. Previous work measuring body weight and blood pressure at 2-time points in a large group of healthy individuals revealed that a 10% increase in body weight was accompanied by a 7 mm Hg increase in blood pressure. If the researchers want to determine if there is a linear relationship between body weight and blood pressure in a subgroup of elderly individuals in this study, which of the following statistical methods would best be employed to answer this question?? 
  {'A': 'One-way analysis of variance (ANOVA)', 'B': 'Two-way analysis of variance (ANOVA)', 'C': 'Pearson’s correlation', 'D': 'Spearman’s correlation', 'E': 'Wilcoxon signed-rank test'},