MsBellamy Places 14 Items on a Table in Front of Her

Ms.Bellamy places 14 items on a table in front of her class, and then she carefully watches the children's lips to see if they are silently "rehearsing" the items to help them remember what they have seen.She observes that just over half seem to use this strategy.Based on this information, what year of age are the students in Ms.Bellamy's class?

A) 3
B) 5
C) 7
D) 10