What factor can cause secondary succession?

Secondary succession happens when the ecosystem started reviving itself after it has been destroyed naturally or man-made for a period of time. The factors that contributes to the cause of secondary succession are the climate, physiography and the biotic factor also. 

Clear cutting can cause secondary succession.

Explanation:

Secondary succession indicates the process which starts with an effect such as harvesting, forest fire, clear-cutting, and hurricane.

Secondary succession occurs in regions that remained disturbed. The disturbance may be because of natural either man-made disturbances.

Clear cutting is an example of a disturbed region where secondary succession can occur.

I will say the answer is b because it ccatggattc