Final answer:
The initial treatment for type 2 diabetes typically involves lifestyle changes, including diet and exercise,(option a) to improve insulin sensitivity. If these changes are insufficient, medications or insulin therapy (option c) may be needed.
Step-by-step explanation:
The initial treatment for type 2 diabetes generally involves lifestyle changes such as modifications in diet and an increase in physical activity, which are both crucial for increasing insulin sensitivity and reducing blood glucose levels. While some individuals are able to manage their diabetes with these non-pharmacological approaches alone, others may require medication to manage their blood sugar levels effectively. Historically, insulin was the first-line treatment, but advancements have brought antidiabetic medications into use as alternative options to enhance pancreatic function and manage insulin resistance. In some cases, if the disease cannot be controlled by lifestyle changes and medication, insulin therapy might be necessary.