Children are able to reason on the basis of hypotheses and propositions in which stage of cognitive development?  

Cognitive development refers to how children acquire, process, and apply knowledge as they grow. 

Key Points

•  Children develop the ability to reason based on hypotheses and propositions during the formal operational stage.
• This stage, which typically begins around age 11 and continues into adulthood, is marked by the ability to think abstractly, logically, and systematically.
• At this stage, children can form hypotheses, test them through deductive reasoning, and consider multiple possible solutions to a problem.
• This ability to think beyond concrete experiences allows for scientific reasoning, moral reasoning, and hypothetical problem-solving.

Hence, the correct answer is formal operational stage.

Hint

•  In the sensorimotor stage (birth to 2 years), children learn through sensory experiences and motor activities.
• The pre-operational stage (2 to 7 years) is characterized by symbolic thinking and imagination.
• The concrete operational stage (7 to 11 years) enables logical thinking about concrete objects.