_____ would be a good example of a prototype for the concept "bird."

Diane understands that her collection of penguin toys can be added to her collection of owl toys to make a collection of bird toys. This illustrates the concrete operation called:

A) associativity. B) combinativity. C) identity or nullifiability. D) transitive inference.

Information-processing approaches to development focus on how people move from one cognitive stage to the next

Indicate whether the statement is true or false.