Correct Response: B. Insulin is needed by the body to metabolize glucose, and high-glucose levels in type 2 diabetes occur when body cells become less responsive to insulin. Inactivity is a primary cause of this insulin resistance. With physical activity, insulin sensitivity or uptake can be improved, contributing to a reduction of blood glucose levels. Type 2 diabetes allows for sufficient production of insulin (A), but body cells have become resistant to it. Urinary and vision problems, (C) and (D), are possible symptoms of diabetes, rather than underlying causes.
