Option 1 explains the higher mutation rate and faster evolution found in RNA viruses. RNA is relatively unstable compared to DNA, which means that it is more prone to errors and mutations during replication. The unstable nature of RNA allows for a higher rate of mutations to occur, leading to a faster evolution of the virus. In contrast, DNA is more stable and has mechanisms in place to correct errors during replication, resulting in a lower mutation rate and slower evolution.

Option 2, which states that viruses can multiply only within the living cell of a host, is not directly related to the higher mutation rate and faster evolution of RNA viruses. While it is true that viruses require a host cell to replicate, this does not explain why RNA viruses specifically have a higher mutation rate.

Option 3, which suggests that metabolic processes are absent in viruses, is not directly related to the higher mutation rate and faster evolution of RNA viruses. Metabolic processes are not directly linked to the mutation rate or evolution of viruses.

Option 4, which states that viruses can remain latent for a long period, is not directly related to the higher mutation rate and faster evolution of RNA viruses. Latency refers to a period where a virus remains dormant or inactive, and it does not explain why RNA viruses specifically have a higher