How do scientists recognize that a climax community has been reached?
a. no more natural resources are available to support the community.
b. the environment is unable to cause changes to that community.
c. the population of a community stabilizes and doesn't change in size or scope.
d. the succession of community is completed.

D. The succession of community is completed.

Explanation:

A succession can be define as a series of gradual changes that occur in the biotic community of the ecosystem with respect to the changes that occur in the abiotic or non-living factors with respect to time until the ecosystem attains stability.

A climax community is the community that develops in the end of the ecological succession. It is the stable community which does not require any further change to occur. With the development of the climax community the succession completes.