Concept:The project method is a learner-centered approach that uses real-life activities to promote learning through social interaction.
Explanation:The project method follows several principles, such as purpose, activity, experience, reality, freedom, and utility.
However, its core principle is social experience.
This is because the method requires students to work in groups on real-world problems.
It prepares them for cooperative life and corporate living.
Learning happens through shared experiences and collaboration.
Other principles like reinforcement, small steps, and artificiality do not define this method.
Answer:C. Principle of social experience.