The diet to treat cystic fibrosis should include all of the following except:
a. high in calories to prevent malnutrition
b. includes liberal salt usage to replace electrolytes
c. restricted in fat to prevent steatorrhea
d. includes dietary supplements and shakes

Option C, Restricted in fat to prevent steatorrhea

Explanation:

In cystric fibrosis, a person is required to take high fat and high calories food to prevent themselves from malnutrition.

CF is a genetic disease in which the epithelial cells of the body are affected due to which the absorption of essential nutrients such as fats, carbohydrates, calories etc is not efficient. Thus, an individual suffering from CF has to intake lot of fats and calories or else they look very skinny and suffer from the issues of being underweight.

Hence, option C is correct