The nurse is aware that diabetics are prone to infection, which can be attributed to:

A. Atherosclerotic vascular changes: While atherosclerosis is common in diabetics, it primarily affects circulation and the cardiovascular system. Although impaired circulation can contribute to slower healing, it is not the primary cause of increased infection risk. B. Deficient protein reserves: Although protein malnutrition can impair the immune response, diabetes does not necessarily lead to deficient protein reserves. The increased risk of infection is more closely related to high glucose levels rather than malnutrition. C. Inadequacy of blood cell production: Inadequate blood cell production (such as anemia) is not a common result of diabetes. While diabetes can cause complications that affect circulatory health, the increased infection risk is primarily due to elevated glucose levels. D. High glucose levels: High blood glucose levels can impair the function of white blood cells, which are essential for the body's ability to fight infection. Hyperglycemia also provides an ideal environment for the growth of bacteria and fungi, making diabetics more prone to infections, especially in areas like the skin and urinary tract.