The feature that distinguishes viruses from all cellular microorganisms is B. ability to reproduce independently.
Viruses cannot reproduce on their own; they require a host cell to replicate and produce new viral particles. In contrast, cellular microorganisms, such as bacteria, can reproduce independently.
While viruses do have nucleic acid (option A) and can be sensitive to certain treatments (similar to antibiotics for bacteria, but not directly applicable since antibiotics target bacterial functions), the key distinguishing feature is their dependence on host cells for replication.