Final answer:
c) Inability to use glucose for energy. Weight loss is common in those with Type 1 DM due to decreased ability to use glucose for energy.
Step-by-step explanation:
Weight loss is common in those with Type 1 DM due to decreased ability to use glucose for energy. In Type 1 diabetes, the body is unable to produce enough insulin, leading to high levels of glucose in the blood. Without insulin, glucose cannot enter the cells to be used as energy, causing the body to break down fat and muscle for fuel, resulting in weight loss.