A group of metabolic disorders characterized by hyperglycemia due to defects in insulin secretion, insulin action, or both.

• A. Melanoma
• B. Diabetes Mellitus
• C. Hepatitis
• D. Muscular Dystrophy

Answer: (B)

Hyperglycemia caused by problems with insulin secretion or the body's response to insulin is what defines diabetes mellitus. This group of metabolic disorders arises when the pancreas doesn’t produce enough insulin or when the body's cells don’t respond properly to insulin, leading to elevated blood glucose levels over time. The description in the question matches this situation exactly, since it centers on high blood sugar due to insulin-related issues.

In contrast, melanoma is a skin cancer arising from pigment-producing cells, hepatitis is inflammation of the liver, and muscular dystrophy refers to genetic muscle-weakness conditions. These conditions do not define a hyperglycemic, insulin-related metabolic disorder, so they don’t fit the description.