Allie, a 7-Year-Old, Sees Two Rows of Pennies of Equal

Multiple Choice

Allie, a 7-year-old, sees two rows of pennies of equal length.The experimenter spreads out one row and asks Allie if they have the same number.Allie says they do have the same number and one row just has more space between pennies.What stage is Allie in?

A) concrete operational period
B) formal operational period
C) preoperational period
D) sensorimotor period