Which of the following foods is likely to have a low glycemic index?

Quinoa is likely to have a low glycemic index because it is a whole grain that is rich in fiber and protein. Foods that are high in fiber tend to break down more slowly in the digestive system, leading to a gradual release of glucose into the bloodstream. This slow release helps to maintain stable blood sugar levels rather than causing rapid spikes. Quinoa's nutrient composition, which includes healthy fats and complex carbohydrates, contributes to its low glycemic response.

In contrast, the other options tend to result in quicker increases in blood sugar levels. White bread, for example, is made from refined flour, which lacks the fiber necessary to slow digestion. Instant oatmeal, while a whole grain, is processed more than traditional rolled oats, leading to a higher glycemic index. Similarly, potato chips are typically made from starchy potatoes and are often fried, which further increases their glycemic index due to the absence of fiber and the presence of unhealthy fats.