Megan is 16 years old and overweight. she loves junk food and chocolate. a 10-minute walk to school is her only exercise every day. which is the best method to megan lose weight? a. only one meal a day and a 30-minute daily brisk walk b. a low-fat diet and a game of tennis or a brisk walk every day c. vitamin supplements and diet pills with a brisk daily walk d. rigorous daily exercise with no change in her diet