Herbert and Harsh Compared the Behavior of Cats That Had

Herbert and Harsh compared the behavior of cats that had observed a model perform an act 30 times with cats that had observed only 15 performances. They found that _________.

A) the extra 15 observances made no difference
B) the first 15 observations had a greater impact than the next 15
C) cats that observed 30 performances did substantially better than those that observed 15
D) cats that observed 15 performances actually did better than those that observed 30