Protists that are part of a(n) are integrated with other cells, but remain self-sufficient.

The correct answer is - colonial organism.

Explanation:

Protists are diverse organism in terms of collection. The protists are single cell microscopic organisms that are part of a colonial organism aggregated with other cells but are self sufficient in their own.

A colony of any single cell organism is collectively called colonial organism. These are the cell if you separate them from the colony they will survive on their own.

Thus, the correct answer is - colonial organism.