Viruses can only survive and reproduce inside a:

Explanation

Option C is correct. Viruses are obligate intracellular parasites that can only reproduce inside living cells, whether plant, animal, or bacterial. They are not considered living organisms since they cannot replicate on their own or survive in non-living cells. Instead, they inject their genetic material into a host cell and use its machinery to produce new viruses, which then go on to infect other cells.