Concept:Group instinct is the organised, cooperative behaviour seen in social insects that live in structured colonies.
Explanation:Soldier ants, honey bees, and termites are social insects.
They display group instinct by dividing work, cooperating, and living together in colonies.
Cockroaches are not social insects.
They do not form organised groups and do not display group instinct.
So, among the given options, cockroaches are the insects where group instinct is not displayed.
Answer:B. Cockroaches