The correct option is D There is a danger of coming viruses, allergens and toxins with introduced crop.
The gene of interest is inserted into the genome of selected crop plants which in turn produce the desired protein product. Such crops are called genetically engineered crops. Although there are many useful of such crops, some concerns or undesirable reasons also arise. One such undesirable reason is - there is a danger of coming viruses, allergens and toxins with introduced crop.