A drug is classified as a diuretic (a drug that increases urination), is commonly used to lower blood pressure or eliminate the body of excess fluid. Most likely the drug:

A. Stomach: The stomach primarily functions in mechanical digestion and protein breakdown, but most absorption does not occur here.

B. Duodenum/proximal jejunum: These regions of the small intestine are responsible for majority of digestion and nutrient absorption, including fats, carbohydrates, and proteins.

C. Ascending colon: This is part of the large intestine, mainly involved in water and electrolyte absorption, not digestion.

D. Transverse colon: Like the ascending colon, this structure primarily functions in water absorption and feces formation.

A. “You don't need a colonoscopy unless you have bleeding when you move your bowels.”: This delays screening and ignores current guidelines.

B. “You don't need a colonoscopy unless you have a family history of colon cancer.”: Screening is recommended for average-risk individuals regardless of family history.

C. “You need to get a colonoscopy when you are 60 years old.”: This is later than current guidelines recommend.

D. “You need to get a colonoscopy when you are 45 years old.”: As per current USPSTF and American Cancer Society guidelines, colon cancer screening starts at age 45 for average-risk adults.