Which One of the Following Children Shows Signs That He

Which one of the following children shows signs that he or she is in Piaget's preoperational stage of cognitive development?

A) Jenny learns hundreds of new words and phrases in only a few months.
B) Jason is able to understand how another boy feels when his bicycle is stolen.
C) Joslyn thinks that when a stuffed dog disappears under a box, it no longer exists.
D) Jimmy is able to reason logically about what it would be like to grow old, yet he cannot envision what it would be like to suddenly turn into a fish.