The correct answer is D. ecesis.
Ecesis is the process of successful establishment of a species in a new area. It is a complex process that involves a number of factors, including the availability of resources, the presence of competitors and predators, and the tolerance of the species to the environmental conditions.
Seres are a series of plant communities that succeed one another in a given area as the environment changes. The climax community is the final stage in a sere, and it is characterized by a stable equilibrium with the environment.
Invasion is the process by which a species enters a new area and spreads to the point where it becomes a problem. Invasive species can have a negative impact on the native plants and animals, and they can also damage the environment.
The answer to the question is D. ecesis.