A) organizations C) humans
B) organisms D) children

A．The distinctive consumer and cultural patterns among youth in Western Europe.
B．The comparison between the features of youth markets in Europe and America.
C．The high proportion young consumers account for both in Europe and America.
D．The immature and under-developed youth market in Western Europea.

A．There may arise unexpected emergence of fashion out of the trend.
B．The teenagers' pursuit of "idols" may not be consistent and rational.
C．Not all the youth worship the "pop" performers in the entertainment field.
D．The youth are always clinging to the trend led by the pop singers.