Final answer:
The best course of treatment for John with type 2 diabetes is a strict diet, frequent blood glucose monitoring, exercise, and oral glucose medication.
Step-by-step explanation:
The best course of treatment for John, who has type 2 diabetes, would be option B: A strict diet, frequent monitoring of his blood glucose, exercise, and oral glucose medication.
Type 2 diabetes is typically managed through lifestyle changes and medication. Weight loss, regular physical activity, and consumption of a healthful diet can help reduce blood glucose levels. John's sedentary lifestyle, overweight condition, and high HbA1c level indicate the need for lifestyle changes, such as a strict diet and exercise. Frequent monitoring of blood glucose levels and oral glucose medication can help in achieving and maintaining blood glucose control.
It is important for John to work with his healthcare team to develop a treatment plan that suits his specific needs and goals.