In "Why Some People Catch a Cold and Others Don't," how does the author introduce the idea that catching colds depends on a person's individual body and health?

a. it reminds protestors of the reasons they have to protest.

well, number 1, the 1920s was not economically prosperous until the start of the lend-lease act, which employed large amounts of people in producing equipment for the allies.

b. world war ii is your answer, because wwi had already ended at 1918, and the cold war was after 1945.

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the answer is c? i just got it write