Final answer:
The nurse will emphasize the importance of regular exercise, a healthy diet, and potentially the use of oral medications to manage type 2 diabetes, rather than the need for daily insulin injections or avoiding all carbohydrates. Therefore, the correct option is c.
Step-by-step explanation:
When educating the family of an adolescent recently diagnosed with type 2 diabetes mellitus, the nurse will include information on regular exercise and maintaining a healthy diet as critical components of managing the condition. While daily insulin injections may be necessary for individuals with type 1 diabetes, those with type 2 often have different management strategies, largely focusing on lifestyle changes. It is also important to understand that avoiding all carbohydrates is not necessary and that moderated consumption is part of a balanced diet; frequent blood transfusions are not a requirement of diabetes management. Instead, monitoring blood glucose levels and possibly taking oral medications are key to controlling type 2 diabetes, along with dietary changes and physical activity.