Milk, curd, butter, ghee, liver and egg yolk are rich source of:

Question

Accepted Answer

The correct option is 4:

Students, let us analyze this question based on the nutritional composition of the food items listed. The combination of milk, curd, butter, ghee (all dairy products), liver, and egg yolk represents a class of nutrient-dense foods, particularly those derived from animals, that are exceptionally rich in specific fat-soluble vitamins and key minerals. The reason "All of the above" is the correct choice is that these foods are universally recognized in nutrition science as being outstanding sources for Vitamin A, Calcium, and Phosphorous simultaneously. Vitamin A is a crucial fat-soluble vitamin necessary for vision, immune function, and cell growth, and it is highly concentrated in the fatty portions of dairy (butter, ghee) and organ meats (liver) and egg yolk. Calcium, the primary mineral for bone health, is the hallmark nutrient of milk and curd. Phosphorous is another major mineral found in abundance in these sources (especially milk, liver, and egg yolk), and it works in close partnership with Calcium in the body for bone structure and energy metabolism. Since these sources provide significant quantities of all three nutrients mentioned in Options 1, 2, and 3, selecting any single nutrient would be an incomplete answer, making Option 4 the most comprehensive and accurate choice.

The incorrect option is 1:

While it is absolutely true that milk, curd, butter, ghee, liver, and egg yolk are rich sources of Vitamin A, this option is incorrect because it is not the *only* major nutrient richly supplied by the entire group. Focusing solely on Vitamin A overlooks the equally critical mineral content provided by these foods. For example, milk and curd are perhaps most famous as dietary sources of Calcium, and selecting Vitamin A alone ignores this fact. Moreover, Vitamin A is fat-soluble, making sources like pure ghee and butter richer, but milk and curd are also exceptional for their high mineral density. Therefore, while Vitamin A is certainly present in richness, it fails to capture the full nutritional profile shared by all the items in the list, making "All of the above" a superior answer.

The incorrect option is 2:

Calcium is a fundamental nutrient in this list, particularly due to the inclusion of milk and curd, which are staple sources of this mineral vital for skeletal and dental health. However, choosing only Calcium is incorrect for the same reason as choosing Vitamin A. The question asks what the listed items are rich sources of, and the food list is a composite of different animal-derived products. Liver and egg yolk are not typically consumed primarily for Calcium, but for their high Vitamin A, protein, and Phosphorous content. By isolating Calcium as the only rich source, this option inaccurately minimizes the very significant contribution of Vitamin A (a defining nutrient of liver/egg yolk/butter) and Phosphorous (a mineral partnered with Calcium in dairy and other foods) from the overall food group.

The incorrect option is 3:

Phosphorous is indeed a key component of these foods, essential for bone mineralization alongside calcium and necessary for numerous metabolic processes. It is abundant in protein-rich foods like milk, liver, and egg yolk. Phosphorous is one of the most common minerals in the human body, second only to calcium, and these food groups are excellent sources. Yet, like the other single-nutrient options, selecting Phosphorous alone is insufficient because it provides only a partial truth. All the listed foods are renowned specifically because they concurrently deliver high concentrations of three essential nutrients: Vitamin A, Calcium, and Phosphorous. Since all three of the individual nutrients listed in Options 1, 2, and 3 are correct in their own right, Option 4 accurately accounts for the entire nutritional strength of the food group.