Out of the following given choices;
a) phenylketonuria (PKU) b) diabetes mellitus c) cystic fibrosis d) ketoacidosis
The answer is C. It is a defect of the chloride ion channels (due to mutation of the CFTR gene) that help with the concentration and secretion of all the fluids in your body affecting mostly the lungs, pancreas, liver, kidneys, and intestine, hence causing excessive production of mucus that clogs up the organs.
