How does the author convey the importance of what happened at the Philadelphia Convention? *
O by outlining the major issues and disagreements that needed to be addressed
O by comparing the Articles of Confederation with the new Constitution
O by highlighting the role that well-known leaders played in the debate
O by sharing the perceptions of ordinary citizens in the country

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