Question

According to the "life-cycle principle" a flu vaccine should be given in priority to those between early adolescence and middle age on what basis?

a. They have more developed interests than younger people and they have more remaining stages to live through than older people.

b. They will outlive older people because they will benefit from medical advances older people could not.

c. They contribute more to society than younger people do.

d. All of these choices.

Answer

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