Answer: A.New vaccines can be made quickly enough to stop epidemics.
Cell technology is a field of biotechnology, in which the totipotency ( self differenciation), self renewable and multi-lineage ability of the cells are used to produce cell cultures which can be further used to treat diseases and disorders in animals, plants and humans.
New vaccines can be made quickly enough to stop epidemics is the positive effect of the cell technology on society because the cell culture of biological agents like bacteria can be used to prepare the vaccine against the epidemics.