A Child Is Tested by Alfred Binet

Multiple Choice

A child is tested by Alfred Binet. Her test results indicate that she has a mental age of five. What does this mean?

A) She is definitely five years old.
B) She is probably developmentally disabled.
C) There is no meaning that could be attached to the fact that she has a mental age of five.
D) Her score is the same as the average score of a group of five-year-olds.