What is it called when individuals must care for both their children and thier elderly parents?

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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

Many planters took advantage of their sharecroppers under this system. where in the process do you see an opportunity for the planter to cheat his sharecroppers?