Hakim and His Older Sister,Nada,are at the Kitchen Table Working

Multiple Choice

Hakim and his older sister,Nada,are at the kitchen table working on their homework.Nada reads Hakim one of the questions she's working on,"Imagine you want to test the hypothesis that warm water freezes faster than cold water.Design an experiment to test your hypothesis." Hakim is very confused and doesn't quite understand this approach to thinking.Given this example,Hakim is likely in the ________ stage,while Nada is likely in the _________ stage.

A) formal operational;concrete operational
B) concrete operational;formal operational
C) preoperational;concrete operational
D) concrete operational;preoperational