Concepts and categories are important because they allow us to:
A) classify objects or ideas as belonging to one single group and no others.
B) avoid using prototypes in most situations.
C) develop mental sets which help us solve new problems.
D) organize and manage tremendous amounts of information.
Answer: D
Rationale: Concepts and categories help us organize and manage information by grouping objects, events, and ideas together. Objects and ideas can belong to more than one concept, and related concepts can be grouped together into categories.
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