Exchange lists are beneficial to creating a diet for diabetics because they           a. give diabetics freedom of choice in the foods they can eat.   b. create portion controls.   c. diabetics produce insulin.   d. make it easy to lose weight

The correct answer is A. Give diabetics freedom of choice in the foods they can eat.

Explanation:

In nutrition and related fields, "exchange lists" is a dietary approach that shows individuals with certain conditions the foods they can eat and their portions. Moreover, in exchange lists, foods are grouped by categories; this implies individuals can choose foods they like or exchange one food for another but still follow the diet.

For example, in the category of fruits people with diabetes can find options such as apples, bananas, cherries, dates, etc. as all of these are fine but the portion varies to avoid an abnormal increase or decrease in sugar levels of diabetic patients. Thus, exchange lists are beneficial for diabetics because these "Give diabetics freedom of choice in the foods they can eat".