Final answer:
Robert Sternberg's triarchic theory of intelligence includes three categories: practical, creative, and analytical intelligence, which cover different aspects of problem-solving and cognitive abilities. The correct option is A.
Step-by-step explanation:
Robert Sternberg's triarchic theory of intelligence is comprised of three categories: practical, creative, and analytical intelligence. These facets of intelligence suggest different aspects of how individuals think and solve problems. Practical intelligence involves problem-solving in everyday life, often considered akin to 'street smarts.'
Creative intelligence relates to the ability to come up with new ideas and novel solutions. Lastly, analytical intelligence is connected to academic problem-solving such as analyzing, evaluating, and comparing data or scenarios. The correct option is A.