Final answer:
Excess fiber consumption does not adversely affect its own absorption in the intestine because fiber is indigestible and thus is eliminated, not absorbed. It instead aids in regulating digestion and can prevent the absorption of unhealthy substances such as cholesterol.
Step-by-step explanation:
The question is concerned with the absorption of nutrients in the intestine and how excess fiber consumption affects this process. The correct answer to "Which of the following is not adversely absorbed in the intestine because when there is excess fiber consumption?" would be D. Fiber. There is no specific threshold given for "excess" fiber consumption in the question, but it is known that fiber itself, being indigestible, passes through the small intestine without being absorbed. This is beneficial as fiber helps to regulate digestion and removal of waste, including unhealthy substances such as cholesterol, which can prevent them from being absorbed.
Carbohydrates are necessary for biological functions, providing energy through the breakdown of glucose during cellular respiration and thus producing ATP. Proteins and fats are also important nutrients that should be consumed in a balanced way alongside carbohydrates and fiber for a healthy diet.