Karla is shown pictures of three daisies and four roses. She is asked whether there are more roses or flowers. She c 'flowers." Being able to focus on classes and subclasses simultaneously is an example of

A) linear thinking.
B) class inclusion.
C) abstract logic.
D) animism.

Class inclusion refers to the ability to understand that a subclass (roses) can be part of a larger class (flowers), and to consider both the subclass and the larger class simultaneously. Karla's response indicates she can think about the roses both as individual entities and as part of the larger group of flowers.