A nutritionist wants to know how the taste of artificial sweeteners impacts food choices of diabetic patients. From which group would it be best to take a sample?

The sample should represent the diabetic patients whose food choices the nutritionist wants to understand. Including both type 1 and type 2 diabetic patients is broader and less biased than selecting only people who avoid or mostly eat artificially sweetened foods. “All patients” could include people without diabetes, who are outside the group being studied.

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