Explain the benefits of supplementing common foods with vitamins and minerals.

supplies essential nutrients lacking in diet / nutrients added by manufacturers;
benefits lower socio-economic groups as common foods are consumed by most people / reduces the need to purchase supplements;
prevents nutritional deficiencies/deficiency diseases;
named example of mineral/vitamin supplementation; (e.g. iodine in salt)

Many candidates were able to get a mark for indicating that supplementing common foods would prevent deficiency diseases or provide nutrients lacking in the diet. However, the fact that "common foods‟ were the ones the supplemented and the benefit of that were usually overlooked.