Answer: C. Primary succession
An ecological succession is a change that occurs in the biotic community of an ecosystem due to changes that occur in non-living factors (weather, climatic conditions, sunlight, water, soil, temperature and disaster or calamity) and time, until the ecosystem attains stability. A primary succession occurs in a region, which was previously colonized by living species but destroyed by a disaster like retreating glacier or volcanic eruption. The region is completely barren and exhibit no life form.
Therefore, the recolonization of an area that has been totally destroyed, is an example of primary succession.
