Final answer:
It is true that water-soluble vitamins are excreted more readily than fat-soluble vitamins, as they move freely through bodily fluids and the excess is excreted in urine, while fat-soluble vitamins can accumulate in the body.
Step-by-step explanation:
Water-soluble vitamins are indeed excreted more readily than fat-soluble vitamins. This is true because water-soluble vitamins, such as the eight B vitamins and vitamin C, are absorbed along with water in the gastrointestinal tract and move freely in water-based bodily fluids. As they are not stored extensively in the body, any excess of these vitamins is typically excreted through urine. In contrast, fat-soluble vitamins like A, D, E, and K are absorbed with dietary fats and can accumulate in the body's lipid stores, potentially leading to hypervitaminosis if taken in excess.