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A. Youth will play a fundamental role as never before in the history of the world in about 15 years’ time.
B. The world is considered as inhospitable or even hostile.
C. In the North, youth will have the responsibility of providing for societies in which elderly people will generally be in the majority.
D. Young people will make up over half of the population in developing countries.

A. without realizing it
B. because it’s part of their religion
C. because superstitions have proven to be true
D. because superstitions are amusing