A nurse is teaching an adolescent how to manage his cystic fibrosis. Which of the following statements by the adolescent indicates an understanding of the teaching?

A. "I will increase my intake of vitamin D.": People with cystic fibrosis have fat malabsorption, which affects absorption of fat-soluble vitamins like A, D, E, and K. Supplementing vitamin D is essential to support bone health and prevent deficiencies. B. "I will limit my calcium intake to prevent kidney stones.": Limiting calcium is not recommended. In fact, individuals with cystic fibrosis are at risk for low bone mineral density and need adequate calcium intake along with vitamin D to support bone development and prevent osteoporosis. C. "I will be excused from physical education class.": Physical activity is encouraged in individuals with cystic fibrosis. It helps improve lung function, clear mucus from the airways, and maintain overall physical health. Avoiding PE would be counterproductive. D. "I will take fewer enzymes when I eat high-fat foods.": High-fat foods require more pancreatic enzyme replacement to aid digestion and absorption. Taking fewer enzymes would result in malabsorption and GI symptoms.