Chi and Koeske Conducted a Memory Study with a Four-And-A-Half-Year-Old

Multiple Choice

Chi and Koeske conducted a memory study with a four-and-a-half-year-old child who loved dinosaurs.They tested the child on a list of 20 dinosaurs that he knew a lot about,and a separate list of 20 dinosaurs that he was less familiar with.Although the child could recall only about 4 out of 20 unfamiliar dinosaurs,the child was able to recall ______ of the familiar dinosaurs.

A) 4
B) 6
C) 9
D) 15