The primary function of which organ is to deliver chyme (food bolus) to the duodenum at the proper rate?

A. Causes a deficiency of intrinsic factor and pernicious anemia: Intrinsic factor is produced in the stomach, not the liver. Its deficiency leads to pernicious anemia.

B. Causes lactose intolerance: Lactose intolerance is due to lactase deficiency in the small intestine.

C. Causes gastric reflux: Gastroesophageal reflux is typically due to lower esophageal sphincter dysfunction.

D. Causes blood drug levels to reach toxic levels: The liver metabolizes drugs. Impaired hepatic function reduces drug clearance, leading to accumulation and potential toxicity.

A. Avoid gas-producing foods: While this may reduce bloating or discomfort, it does not address constipation directly.

B. Request that the provider prescribe a stool softener: This may help symptomatically, but it's not the first-line intervention.

C. Promote active range-of-motion activities: Exercise helps bowel movement, but fluid and fiber intake is more essential initially.

D. Add fluid and fiber to the diet: Increased fiber adds bulk to the stool, and fluids soften it, both of which promote bowel movement and relieve constipation.