Respuesta :
i would have to say the answer is D - both are sources of energy
Both lipids and carbohydrates function as sources of energy in all living organisms.
Carbohydrates are readily broken down to release energy for metabolic purposes in cells in a process known as respiration.
Lipids, on the other hand, serve more as energy reserves for organisms. In order to extract the energy in lipids, they must first be hydrolyzed into their components - fatty acid and glycerol. the resulting fatty acid is then oxidized into acetyl CoA and then enters Kreb's cycle.
More on energy generation in living organisms can be found here: https://brainly.com/question/2557452