Which of 3-Year-Old Sarah's Activities Provides the Best Example of the Symbolic

Multiple Choice

Which of 3-year-old Sarah's activities provides the best example of the symbolic function substage of preoperational thought?

A) She takes a crayon, scribbles a big blob on a piece of paper, and says, "That's you, Mommy!"
B) She says, "When Mommy leaves my room, I know that she's still in the house!"
C) She actively searches for her favourite toy, even though it is partially covered by a blanket.
D) She is making cookies and says, "Those two cookies have the same amount of dough, even though one is thicker than the other."