11. Preoperational stage in Jean Piaget's cognitive development theory, is characterized by: a) Ability to conserve objects b) Hypothetical deductive thinking c) Development of abstract thinking (d) Thinking centered on one aspect

The correct answer is (d) Thinking centered on one aspect.<br /><br />The preoperational stage in Jean Piaget's cognitive development theory typically occurs between the ages of 2 and 7 years. During this stage, children are primarily focused on thinking about one aspect of a situation at a time, which is known as centration. They often have difficulty considering multiple aspects of a situation simultaneously. This stage is also characterized by egocentrism, where children have difficulty seeing things from perspectives other than their own.