Which of the following is true about viruses in the context of biological classification?

A. They are classified in the kingdom Plantae
B. They are classified as living organisms
C. They are not classified in any kingdom
D. They are classified as prokaryotes

Answer: They are not classified in any kingdom


Additional Information: Viruses are not classified as living organisms because they cannot perform metabolic processes on their own and must infect a host cell to replicate.