The correct option is D Climate
Climax community
Climax community is the last stage of ecological succession and does not change further. For example, forest.
Factor decide the climax community
Climax community is the stable community formed, which is almost in equilibrium with the environment of the area where ecological succession occurred. It is the end of ecological succession and remains stable until the environment remains unchanged. The nature of the climax community depends upon the climate.
Climate
Climate is defined as the predictable atmospheric conditions of a specific area. It is characterised mainly by temperature and annual rainfall.