I know this is very late but the actual answer is C) Both or stage theorists
A is wrong because Piaget studied intellectual development of children and Erikson studied human development.
B is wrong because only Erikson relied on Freud's foundational work.
D is wrong because A and B are wrong.
D. Staying happy even when facing serious problems
Break it up into sections. We'll do 3 sections: (Ab) (stin) (ence)
1) say it like it looks
2) also say it like it looks
3)say it like sense, but without the first "s"
