B. Similar bacteria or protozoa which group together
Explanation;
Colonial organisms are clonal colonies composed of many physically connected, interdependent individuals.
All the individual cells of a colonial organism can carry out all functions necessary for life, so they could all be seen as a single organism.
Colonial organisms are more than just a group existing together. They experience advantages from the communal living. They are called colonies because each member of the colony has the capabilities of living and surviving independently on its own, but takes advantage of the colony situation.
