Answer:B. The disassembly of macromolecules into the subunits requires energy.
Explanation:Large organic nutrients in living organisms are classified as MAJOR MACROMOLECULES. they are present in the everyday nutrients of Humans. The major MACROMOLECULES are LIPIDS,PROTEINS, CARBOHYDRATES AND NUCLEIC ACID they together make up the building blocks of a living organism.
Dissembling or breaking down of this major MACROMOLECULES require some amounts of energy needed to break down the materials.