American Language Course Placement Test (ALCPT) Practice Exam

The term 'digest' primarily relates to the process of breaking down food in the body so that nutrients can be absorbed. During digestion, complex food substances are transformed into simpler compounds, which allows the body to take in essential nutrients such as vitamins, minerals, carbohydrates, proteins, and fats.

The body functions efficiently because digestion is a crucial part of the nutritional process that ensures these nutrients are made available for absorption into the bloodstream. This absorption takes place primarily in the small intestine, where digested food particles are integrated into the body for use in various metabolic functions.

While other choices mention bodily functions, they do not revolve around the primary meaning of 'digest.' Disturbing sleep, generating energy, and increasing appetite are all related to different physiological processes but do not capture the essence of what digestion entails. Hence, the correct answer reflects the foundational role of digestion in nutrient absorption.