Class inclusion refers to the knowledge that a. all objects ...

[lbcchick]

Class inclusion refers to the knowledge that
 
  a. all objects must belong to at least one type of class.
  b. a class must always be smaller than any more-inclusive class in which it is contained.
  c. a class must always include more than one subclass.
  d. a superordinate class cannot include more than two subordinate classes.

Question 2

The concrete operational ability to classify objects simultaneously on the basis of more than one category is called
 
  a. multiple classification. c. criteria assessment.
  b. dimensional classification. d. labeling.

[alvinum]

Answer to Question 1

B

Answer to Question 2

A