Martial Arts Instructor Course Practice Test 2025 – Full Exam Prep

Fat-soluble vitamins are distinguished by their ability to be stored in the body's fatty tissues and liver. This characteristic allows them to be available for use when the body needs these nutrients. The fat-soluble vitamins include A, D, E, and K. These vitamins require dietary fat for their absorption in the gastrointestinal tract, and they can accumulate in the body's fat stores, which is advantageous in maintaining sufficient levels over time.

In contrast, water-soluble vitamins, such as the B vitamins and vitamin C, are not stored in the body to the same extent and any excess is typically excreted through urine. This means that regular intake of water-soluble vitamins is necessary to meet the body's needs. The option that states "all vitamins" does not hold true because not all vitamins have the capability to be stored in fatty tissues. Furthermore, singling out vitamins A and C creates confusion as it suggests that only these two are involved in fat storage, whereas vitamin C is actually water-soluble and not stored in fatty tissues like its fat-soluble counterparts. Thus, the recognition of fat-soluble vitamins as the correct answer highlights their unique storage capabilities within the body.