Answer:
The correct option is A. Secondary succession has occurred in this forest.
Explanation:
Secondary succession can be described as the process through which an ecosystem revives again after an event or disaster like a fire. It is a succession which develops after the removal of the primary or initial succession.
First of all, grasses and herbs start to grow on the destroyed land. Then with time, small trees start to grow again. Other organisms begin to migrate to this land. and eventually bigger trees might be similar to the initial succession ones, start to grow again.