Which of the following foods is the best source of preformed vitamin A?

Question

Quizplus · Accepted Answer

Liver is the best source of preformed vitamin A. It contains high levels of retinol and retinyl esters, which are the active forms of vitamin A that can be readily used by the body. Carrots, on the other hand, contain beta-carotene, which is a precursor to vitamin A and needs to be converted by the body before it can be used. Soybeans and apples do not contain significant amounts of vitamin A.

Which of the Following Foods Is the Best Source of Preformed