Final answer:
Cystic fibrosis primarily affects the lungs and pancreas, causing breathing difficulties, chronic lung infections, and disruptions in digestion.
Step-by-step explanation:
Cystic fibrosis primarily affects the lungs and pancreas.
It causes breathing difficulties and chronic lung infections due to the buildup of thick mucus in the airways. Additionally, it affects the pancreas by disrupting the production of enzymes needed for digestion.
While cystic fibrosis can also affect other organs such as the liver and intestines, the lungs and pancreas are the most commonly and severely affected.