The process of breeding crops for higher level of proteins, vitamins and/or oil content is called

Biofortification

The correct answer is Option (3) → Biofortification

Biofortification – breeding crops with higher levels of vitamins and minerals, or higher protein and healthier fats – is the most practical means to improve public health.
Breeding for improved nutritional quality is undertaken with the objectives of improving –
(i) Protein content and quality;
(ii) Oil content and quality;
(iii) Vitamin content; and
(iv) Micronutrient and mineral content.