The correct pairing of a macromolecule with its monomer is Carbohydrate - Monosaccharide.
- Carbohydrates are made up of monosaccharides (e.g., glucose).
- Lipids are made up of fatty acids and glycerol, not amino acids.
- Proteins are made up of amino acids, not nucleotides.
- Nucleic acids (such as DNA and RNA) are made up of nucleotides, not fatty acids.
So, the only correct pairing from your options is Carbohydrate - Monosaccharide.