Which statement correctly describes fat-soluble vitamins in terms of storage?

• A. They are excreted rapidly.
• B. They are not stored in fat.
• C. They are stored in fat and can accumulate.
• D. They are all water-soluble.

Answer: (C)

The main idea here is how fat-soluble vitamins behave in the body. Fat-soluble vitamins (A, D, E, and K) are absorbed with dietary fat and tend to be stored in body fat and the liver. Because they’re stored rather than quickly eliminated, they can accumulate if intake is high, which is why excess supplementation can lead to toxicity. That’s why the statement that they are stored in fat and can accumulate is the best description.

This contrasts with the other statements: they are not excreted rapidly, because their storage slows clearance; they are indeed stored in fat, not outside fat; and they are not all water-soluble, since by definition they are fat-soluble.