Mother's milk provides almost complete diet to the new-born, but it lacks the following

Correct answer: (a) Iron

Explanation

Mother's milk is a nearly complete diet but is deficient in iron, so supplementation/iron-rich foods are needed as the baby grows.

It is rich in antibodies, fats, cholesterol, calcium, magnesium and potassium that protect against infections.

The newborn meets early iron needs from stores built up before birth.