Arielle is an 8-year-old with cystic fibrosis. For 30 minutes each morning and evening, a parent holds her body in various positions and massages and kneads the areas over her lungs to dislodge the abundant, sticky mucus, which Arielle spits into a jar. She also takes medication - an enzyme - that thins the mucus. If she didn't take these measures, the mucus in her lungs would most likely increase her risk of

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Cystic fibrosis is a genetic disease that affects the respiratory, digestive, and reproductive systems. It causes the production of thick, sticky mucus that clogs the lungs and leads to infections, which is why the best choice is C) infection. Without the measures mentioned, Arielle's mucus wouldn't be dislodged or thinned, leading to an increased risk of lung infections. Cancer, emphysema, and asthma are not direct risk factors of cystic fibrosis.

Arielle Is an 8-Year-Old with Cystic Fibrosis