n a nutritional study, the impact of three different diets on blood glucose levels is being investigated. A total of ninety participants with prediabetes are randomly assigned to three equal groups: (1) a high-fiber diet, (2) a high-protein diet, and (3) a low-carb diet. The study measures fasting blood glucose levels as an indicator of glycemic control over a three-month intervention period. What statistical method should the researcher use to analyze the data? A. ANOVA B. paired t-test C. two-sample t-test D. z-test for the population mean