Which of the following is NOT a dietary source of retinol?

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Multiple Choice

Which of the following is NOT a dietary source of retinol?

Explanation:
This item tests the distinction between preformed vitamin A and provitamin A carotenoids. Retinol is the preformed, active form of vitamin A found directly in animal foods such as eggs, dairy products, and meat. Leafy green vegetables, on the other hand, mainly provide carotenoids (like beta-carotene), which the body can convert to retinol but are not retinol themselves in the diet. So leafy greens are not a dietary source of retinol, even though they can contribute to vitamin A status after conversion. The other choices supply retinol directly, making them true dietary sources.

This item tests the distinction between preformed vitamin A and provitamin A carotenoids. Retinol is the preformed, active form of vitamin A found directly in animal foods such as eggs, dairy products, and meat. Leafy green vegetables, on the other hand, mainly provide carotenoids (like beta-carotene), which the body can convert to retinol but are not retinol themselves in the diet. So leafy greens are not a dietary source of retinol, even though they can contribute to vitamin A status after conversion. The other choices supply retinol directly, making them true dietary sources.

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