Final answer:
Proteins are the macromolecules made of long chains of amino acids and perform various important roles in cellular function. The correct answer is C) proteins.
Step-by-step explanation:
The type of macromolecule that is constructed of long chains of monomers called amino acids is proteins. Proteins are essential macromolecules for cell function, assisting in metabolism, providing structural support, and serving as enzymes, carriers, or hormones. The monomers, known as amino acids, link together through dehydration reactions to form polymers called polypeptides, which then fold into functional proteins with complex structures. The correct answer to your question is C) proteins.