Final answer:
The main advantage of insulin pens is their ability to provide convenient and accurate dose adjustments for diabetes management. They are portable and support discreet use, suitable for both long-acting and rapid-acting insulin.
Step-by-step explanation:
The key advantage of insulin pens is that they offer convenient and accurate dose adjustments. Unlike some other methods of insulin delivery, insulin pens are designed to be user-friendly and allow for precise adjustment of the insulin dose, which is vital for managing blood sugar levels effectively. They are portable and can be used discreetly, supporting diabetics in maintaining their treatment while on the go. Insulin pens can be used for administering both long-acting and rapid-acting insulin, making them versatile tools in diabetes management.