Answer:
formal operations stage
Explanation:
Piaget’s Stage Theory of Cognitive Development is a model that describes the cognitive development during the development in children and is divided into the following four stages: sensori-motor, pre-operational, concrete, and formal. According to my research on this theory, I can say that based on the information provided within the question hypothetical-deductive reasoning occurs in the formal operations stage which pertains to children ages 11 to 15.
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