_______ is the building block of carbohydrates.AMonosaccharideBAmino acidCGlycerolDFatty acidsAnswer: A. Monosaccharide Read Explanation: Carbohydrates are made up of monosaccharides. It is the sugar that cannot be hydrolyzed further. They come together to form a disaccharide which further goes on forming a carbohydrate. They are the major source of energy for living beings. Read more in App