Demonstration is an example of -

Correct option is B

Demonstrations involve engaging a group to show how a particular practice or innovation can be applied effectively, hence falling under the group approach.
Information Booster: Demonstrations are key tools in extension education for teaching practical skills and encouraging group learning. They serve as powerful mediums to visually reinforce concepts.
Additional Knowledge:
· Individual approach: Personal interactions, such as counseling or one-on-one training.
· Mass approach: Involves reaching a wide audience through media like TV or radio.
· Field approach: Broadly refers to practical or outdoor learning contexts, which can overlap with other methods.