In which case did the court rule that flag burning was not illegal under the first amendment? a-us v. fields b-new york times v. sullivan c-texas v. johnson d-us v. alvarez

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.