The answer is D, the viruses use the body's cells to make new viruses
Explanation:
For example, see the lysogenic and lytic cycle. The lytic cycle involves the virus taking over metabolic processes of the cell in order to reproduce. Probably skip the lysogenic cycle since it does not kill the cell.
The answer would be A, regulating the content of processed foods. There are so many processed foods in today's society that it is extremely difficult to avoid them. Hope this helps