Countries with an aging population may struggle to… A) find enough jobs for everyone entering the workforce.
B) provide social services for young mothers.
C) support the medical and economic needs of an older population.
D) ensure education for the “under 15” population.
E) provide housing for new young families.

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities