The correct answer to the question is:
A. Macromolecule
Explanation:
1. A macromolecule is a large molecule made up of smaller subunits called monomers. These macromolecules are essential for supporting various life processes in living organisms.
2. Examples of macromolecules include proteins, nucleic acids (DNA and RNA), carbohydrates, and lipids. These molecules play crucial roles in functions such as energy storage, structural support, and information transfer within cells.
3. Carbohydrates, mentioned in option B, are a type of macromolecule that provides energy to living organisms. They consist of sugars, starches, and fibers.
4. Inorganic molecules, mentioned in option C, are molecules that do not contain carbon-hydrogen bonds. They can be essential for life processes but are not typically considered macromolecules.
5. Elements, mentioned in option D, are pure substances made up of only one type of atom. While they are the building blocks of molecules, they do not fit the description of a macromolecule.
Therefore, in the context of the question, the best choice is A. Macromolecule, as it accurately describes large molecules made from smaller units that support life processes.
