Answer:
Formal operational.
Explanation:
Cognitive development refers to the development of thought and information processing in children. It includes the development of perceptual skills, knowledge, dispositions, language learning and other aspects that develop a child's brain into an adult brain. As per the question, Peggy is in the 'formal operational' stage of cognitive development that illustrates the fourth and final stage of cognitive development. It starts at the age of twelve and ends with adulthood. At this stage, the child begins to think in a more sophisticated and advanced manner and develops the ability to think abstractly. They gain the ability to manipulate ideas. Thus, Peggy's action displays the growth of reason and logic in her thoughts. Therefore, the answer is the '<u>formal operational' stage</u>.
3. Grete, an innocent and doting sister, eventually seeks her independence.
“The school is offering art classes to all of its students” is the correct answer
