The correct option is C Succession
Ecological succession is the process of change in the species structure of an ecological community over time. There are two different types of succession—primary and secondary have been distinguished. Primary succession takes place new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. Secondary succession takes place in response to the natural disturbance like the flood. Thus, the correct answer is option C.