Concept:Social insects are species that live together in organized groups called colonies, where they cooperate and divide tasks among themselves.
Explanation:Termites, ants, and bees all live in colonies with a structured caste system, including workers, soldiers, and a queen.
Colonial living allows these insects to share responsibilities such as foraging, building nests, and caring for the young.
This level of cooperative social organization is a key characteristic of social insects.
Grasshoppers, in contrast, are solitary insects.
They do not form colonies, do not have a division of labour, and generally live and feed independently.
Therefore, grasshoppers do not exhibit the social behaviour seen in the other three options.
Answer:C. Grasshoppers