Viruses are considered to be nonliving because they a. cannot multiply. b. use energy to grow. c. are smaller than bacteria. d. do not show all the characteristics of life.

Hello,

Viruses are considered to NOT be a nonliving because they lack many properties of living organisms. Viruses don't have the ability to make their own chemical products and need a host cell to do that for them. That is why they can't reproduce without a host cell.

So I believe the answer to your question is: B) Use energy to grow. They are considered nonliving because they need the energy to grow/need a host cell to reproduce for them.

Thanks,