It is this high blood sugar (hyperglycemia) that can cause necrosis. Necrosis from diabetes is because of high blood sugar. Hyperglycemia damages nerves and blood vessels and reduces blood flow. These conditions can cause a host of health problems, including necrosis.
absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.
so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.