<prompt> Which of the following food is having the highest protein content when compared to others?MuttonSoya beanEggMilk  <response>: Protein value of some common foods g100 g: Mutton 21.4 Fish 19.5 Egg hen 13.3 Liver goat 20 Cows milk 3.2 Soya bean 43.2 Bengal gram 17.1 Ref: Textbook of Preventive and Social Medicine by K Park, 19th edition, Page 498. 