Concept:Removing the outer leafy sheath or husk from a maize cob is known as dehusking.Explanation:The maize cob is covered by a leafy sheath called the husk.Dehusking means removing this outer covering from the cob.Shelling means removing the grains from the cob after dehusking.Winnowing separates grain from chaff using air movement.Milling grinds grains into flour or powder.Therefore, the correct term for removing the sheath is dehusking.Answer:C. dehusking