Correct option is C
Extension education is a type of education that is conducted outside the formal school and college system and focuses on practical problem solving. It is voluntary in nature and emphasizes learning through experience, observation, and participation rather than classroom instruction. There is no fixed syllabus, prescribed curriculum, or ensurement of degrees in extension education programmes. Therefore, extension education is correctly categorized under informal education.
Information booster: Extension education aims at bringing desirable changes in knowledge, attitude, and skills of farmers and rural people through non-formal means. It follows the principle of learning by doing, where learners actively participate in the learning process rather than passively receiving information. The extension system is flexible and dynamic, allowing programmes to be designed according to local needs and problems of the community. Extension education plays a major role in technology transfer, rural development, and improvement of quality of life.
Why other options are incorrect: (a) Partially formal is incorrect because extension education does not follow any structured academic framework. (b) Formal is incorrect since formal education requires classrooms, curriculum, and examinations. (d) Semi formal is incorrect as extension education lacks institutional rigidity.