Sustained energy is provided by glycemic index foods. a. high b. moderate-to-high c. low-to-moderate d. low

The correct answer is low glycemic index foods. Low glycemic index (GI) foods are foods that are digested, absorbed and metabolized slowly, which in turn causes a small and slow rise in blood glucose levels. These kind of foods help maintain healthy insulin levels and are generally considered as healthy foods. Some low GI foods include rolled oats, fruits, legumes and non-starchy vegetables.