Final answer:
The correct option is: c) keratin. main protein component of hair and nails is keratin, is a tough protein that forms fibers, making nails and hair tough and strong which is a tough protein that forms fibers. Hair and nails serve multiple functions in the body, including protection and sensory input.
Step-by-step explanation:
The main protein component of hair and nails is keratin. Keratin is a tough protein that forms fibers, making nails and hair tough and strong. It is similar in toughness to chitin, the carbohydrate found in the exoskeleton of arthropods. Hair and nails serve various functions in the body, such as protection and sensory input.
The correct option is: c) keratin. main protein component of hair and nails is keratin, is a tough protein that forms fibers, making nails and hair tough and strong which is a tough protein that forms fibers. Hair and nails serve multiple functions in the body, including protection and sensory input.