Glycemic index is a way to understand how carbohydrates in foods may impact the speed at which they are digested, absorbed or metabolized.

answer; i believe that the correct answer is (b) is a factor associated with physical activity and heart disease;

a mother eats twice as much to support her growing fetus

limiting sugar intake in a mother with gestational diabetes, switching from diving to swimming.   depending on whether the patient is normal weight, over weight or gain will differ depending on that.