The reference protein is -: (A) Fish, (B) Egg, (C) Rice, (D) Lemon
Answer is B. Ans. is 'b' i.e., Egg * Eggs are used in nutrition studies as a "reference protein" as eggs proteins are considered to be the best among food proteins because of their high biological value and digestibility.* So NPU is also high because it is the product of biological value and digestibility cofficient divided by 100.