Which one of the following choices best describes a diet-planning tool most often used for diabetic or weight-control diets?
a. exchange lists
b. mypyramid
c. eating well with canada’s food guide
d. dietary reference intakes

The answer is letter D. 

Dietary Reference Intakes are an effective diet-planning tool for diabetics and people who have weight control issues. These are basically quantitative values that estimate the necessary nutrient intake for people who are planning to undergo an effective weight loss or sometimes controlled blood sugar type of exercise regimen. Knowing the exact value of nutrients to be consumed is a great way of controlling the sugar levels in the blood and is an effective measure in ensuring a successful weight loss fitness goal.