Despite their abilities to solve different kinds of problems, ________ children still cannot think hypothetically.

According to Jean Piaget's theory of cognitive development, when children reach the stage of being able to generalize, think systematically using hypothetical hypotheses, and test them mentally, they are in the:

Match the stages of cognitive development in Column I with their major characteristics in Column II: Column I a. Pre-operational stage b. Sensorimotor stage c. Concrete operational stage d. Formal operational stage Column II I. Manipulation of objects in the environment II. Child begins to think abstractly and logically about hypothetical terms III. Child begins to acquire vocabulary and use symbols IV. Child learns to perform logical concrete operations such as adding, subtracting, multiplying, and dividing