Select the reasons why viruses, prions, and viroids are not classified as living organisms. a. they are not able to reproduce independently. b. they are only motile in the early stages of growth. c. they do not use energy for metabolism of any kind. d. their virulence is maintained by non-living cultures.

Viruses, prions, and viroids are not classified as living organisms because they are not able to reproduce independently, and they do not use energy for metabolism of any kind. Option A and C

Explanation:

Viruses, prions and viroids are not classified as living organisms because they are not made out of cells, they are not able to reproduce independently, and they do not use energy for metabolism of any kind.

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a symbiotic relationship with the mitochondria