Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains

carbon, hydrogen, oxygen, and will sometimes contain a phosphate group.

The correct option is B. Lipids

Explanation:

Lipids can be described as molecules which dissolve in non-polar solvents and cannot dissolve in water. The biological function of a lipid molecule is to store energy as well as to structure the shape of cell membranes. Lipids are also used in a cell for signalling.

Lipids are made up of carbon, hydrogen and oxygen. Some lipids might have phosphorus in them like the phospholipids which make up the cell membrane.