What two-word term describes a population's disease resistance that is achieved by either exposure and recovery or an effective vaccine?

Me with this psychology homework, i’m struggling with it.

To what is the growth of civilization most clearly traced

Considering "civil disobedience," which best describes how thoreau and martin luther king, jr. both felt about acts of civil disobedience? a. they both believed that acts of peaceful political protest would not affect or alter the law.b. they both believed that people should go against certain laws because government is a flawed concept.c. they both believed that individuals have the right and the responsibility to protest unjust laws.d. they both believed that breaking the law is an unjust action that deserves punishment.answer is c.