Delayed wound healing is caused by deficiency of:

Explanation

Zinc (Zn) deficiency is directly linked to delayed wound healing because zinc is integral to the processes of collagen synthesis and cell proliferation, which are crucial for repairing and closing wounds. Without sufficient zinc, these critical processes are disrupted, resulting in impaired healing.Iron (Fe) deficiency primarily causes anemia due to its role in hemoglobin formation, affecting overall oxygen transport but not specifically wound healing. Cobalt (Co) is essential for vitamin B12 function, influencing blood and nerve health, but it does not directly impact the healing process of wounds. Manganese (Mn) supports enzymatic activities and bone health, and while it plays a role in tissue repair, its deficiency is not a common cause of delayed wound healing.