What is the breeding of crop varieties with higher levels of vitamins,proteins,and minerals called?

The Indian Agricultural Research Institute $(IARI)$,New Delhi,has released several fortified vegetable crops that are rich in vitamins and minerals. These are:
$I$. Vitamin-$A$ enriched carrot,spinach,pumpkin
$II$. Vitamin-$C$ enriched bitter gourd,bathua,mustard,tomato
$III$. Iron and calcium enriched spinach and bathua
$IV$. Protein enriched broad beans,French bean,garden pea
Choose the correct option.

Pusa Sem $2$ is resistant to insect pests like

How many varieties of cauliflower are developed by biofortification or conventional breeding for resistance to black rot?

In hybrid varieties of maize,the amount of which amino acid is found to be double?

Which variety of wheat is used as a donor for improving wheat crops due to its high protein content?