which macromolecule provides a person with the highest amount of energy per mass?\n\nlipids\ncarbohydrates\nn…

Brief Explanations:

The energy density of macromolecules is determined by their chemical structure and the amount of oxidation they can undergo. Carbohydrates and proteins provide approximately $4\text{ kcal/g}$, while lipids (fats) provide approximately $9\text{ kcal/g}$. This is because lipids contain more carbon-hydrogen bonds and less oxygen, allowing for more energy release during metabolic oxidation. Nucleic acids are not primary energy sources for the body.

Answer:

lipids