Why Does Age Constitute a Subculture

Why does age constitute a subculture?

A) Age is a subculture because of the definitions adopted by Statistics Canada
B) People of a certain age share the same genetic traits.
C) Age is easy to research
D) Age has been traditionally thought of as a subculture and consumer behaviourists have seen no reason to modify that long- standing belief.
E) People of the same age have shared the same experiences and have common memories.