The type of vaccine that is NOT listed among the options you provided is "Opsonization viruses." Opsonization is a process related to the immune response, but it is not a type of vaccine. The other options represent different types of vaccines:
1. Subunit vaccines
2. Inactivated viruses
3. mRNA vaccines
4. Attenuated or "live" viruses
These are all recognized types of vaccines used to prevent various diseases.