The correct answer is ?Kwashiorkor.Kwashiorkor is caused by severe protein deficiency.About Proteins:Proteins are one of the building blocks of body tissue.Proteins are made up of Carbon, Hydrogen, Oxygen, and Nitrogen.Proteins help for the growth and repair of the body.Proteins are the nutrient known as 'bodybuilders'.Amino acid is the basic unit of proteins.The Soyabean contains the highest percentage of protein.The major source of proteins is meat, milk, egg, fish, gram, etc.Marasmus is also caused by severe protein deficiency.Additional InformationRickets and Valk-Skin are caused due to deficiency of Vitamin D Iodine deficiency is the most common cause of goiter.Xerophthalmia is a progressive eye disease caused by vitamin A deficiency.