When the Immunologist Says That Pathogens Possess Infectivity, What Is

Multiple Choice

When the immunologist says that pathogens possess infectivity, what is the immunologist explaining?

A) Infectivity involves the ability of pathogens to spread from one individual to others and cause disease.
B) Infectivity involves pathogens inducing an immune response.
C) Infectivity involves pathogens invading and multiplying in the host.
D) Infectivity occurs because pathogens damage tissue.