Answer:
c. Climax
Explanation:
Climax community is an ecological community in it final stage of succession, in which the species that makes up the community are relatively stable unless a rare earth disaster like earthquakes, fire etc destabilize the system.
The climax community has reached the stable stage. The community is well defined and extensive . This stability is usually actualized when more complex organisms replace more simple organism. Succession in this kind of community has occurred severally until it reaches it reaches the climax stage. Most climax community takes hundreds and millions of years to reach stability. This stability is achieved through succession : a process whereby natural communities is replaced by another. For example grass may invade an ordinary flat sandy surface then the grass will provide humus for other more complex species to grow like oaks and beeches tree before it reaches a stable community.