Lipid refers to any class of organic compounds that are considered fatty acids. This also includes their derivatives that are soluble in organic solvents, like many natural oils, waxes phospholipids and steroids.
All lipids have similar properties because their molecules are made of the same elements with similar chemical structure that only varies slightly.
Foods like meat, poultry, seafood, beans, peas and eggs are all sources of proteins, while good that contains saturated fat like palm oil, coconut oil, milk, cheese and coffee creamers and butter contain lipids, that may help in storing energy.
So the answer is 1 and 3.
