For a patient with type 2 diabetes, which exercise plan reflects understanding of the teachings received about controlling blood glucose levels through exercise?

a. "I want to go fishing for 30 minutes each day, so I will drink fluids and wear sunscreen."
b. "I will go running each day when my blood sugar is too high to bring it back to normal."
c. "I will plan to keep my job as a teacher because I get a lot of exercise every school day."
d. "I will take a brisk 30-minute walk 5 days a week and do resistance training three times a week."