According to Jean Piaget's theory of cognitive development, at which stage most children can think hypothetically ?

Correct option is D

Formal operational
According to Jean Piaget, the stage where most children can think hypothetically is the Formal Operational stage. This stage typically begins at around age 11. It marks the emergence of abstract reasoning and the ability to use hypothetical and deductive reasoning. Children at this stage can conceptualize possible outcomes and hypothesize about events not directly experienced. In contrast, the Sensorimotor and Preoperational stages involve more concrete and immediate thought processes, and the Concrete Operational stage, while more logical, still relies heavily on concrete references for reasoning.