The correct option is D Lipids are macromolecule.
Lipids are not macromolecules. They are a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, phospholipids, and others. The main biological functions of lipids include storing energy, signalling, and acting as structural components of cell membranes. Lipids may be broadly defined as hydrophobic or amphiphilic small molecules.