John, a 52-year-old construction worker, was recently diagnosed with diverticular disease. how could his breakfast be improved to increase his fiber intake to at least one-third of his daily requirement? his usual breakfast consists of: 1 cup of orange juice, 1 cup of cornflakes with 1 cup whole milk, 2 slices white toast with 2 tsp margarine and 2 tsp strawberry jelly, and 1 cup coffee with cream and 2 tsp sugar