Question

damaged cells of an organism are usually by mitosis. renewed replicated rebuilt replaced

Explanation:

Mitosis is a process of cell division. When cells are damaged in an organism, new cells are formed through mitosis to take the place of the damaged ones. "Renewed" implies just making something work again but not necessarily replacing the damaged cell. "Replicated" means making an exact copy (like in DNA replication before cell division but not specifically for replacing damaged cells). "Rebuilt" is more about constructing something from parts which is not the biological process here. "Replaced" correctly describes the function of mitosis in getting rid of damaged cells and having new, healthy ones take their place.

Answer:

replaced