Which mineral is NOT listed as needed for claw growth?

• A. Sodium
• B. Copper
• C. Zinc
• D. Selenium

Answer: (A)

Claw growth depends on minerals that directly support keratin production and the structural integrity of the growing tissue. Zinc is a crucial cofactor for enzymes that synthesize keratin and support cell proliferation in the claw area, so it’s clearly involved in growth. Copper helps cross-link proteins in connective tissue, contributing to the strength of a newly formed claw. Selenium supports antioxidant defenses in rapidly growing tissues, protecting the developing claw from oxidative damage. Sodium, on the other hand, is an essential electrolyte mainly involved in fluid balance and nerve/muscle function, not in keratin synthesis or the structural formation of claws. That’s why sodium isn’t listed as needed for claw growth.