Potatoes with vaccines are used to

The correct option is A Improve starch and vitamin A content
Recombinant DNA technology has developed crops that have been introduced with vaccines. These are genetically modified crops. There are many crops developed which helps to provide nourishment to the people who cannot afford fortified foods. The potato was injected with a vaccine to improve the amount of starch produced in the crop. The crop was also injected with vitamin A or derivatives which can be converted to vitamin A, like provitamin A after consumption by humans. This helps to provide food and improve the health of poor people by supplying staple foods.

Thus, the correct answer is option B.