The major source of vitamin A are egg yolk, carrot, and palm oil.
Vitamin A is a fat-soluble vitamin that is essential for maintaining healthy vision, skin, and immune function. It is also important for the normal growth and development of cells and tissues in the body.
Egg yolk is a good source of vitamin A because it contains carotenoids, which are converted into vitamin A in the body. Carrots are also a rich source of carotenoids, particularly beta-carotene, which the body can convert into vitamin A. Palm oil is another source of carotenoids and is commonly used in many countries as a cooking oil and food ingredient.
While other foods may contain some amount of vitamin A, such as liver, green vegetables, and milk, they are not considered to be as rich a source as egg yolk, carrot, and palm oil.
Therefore, egg yolk, carrot, and palm oil are considered the major sources of vitamin A in the diet.