There are two organisms with overlapping ranges that fill a similar niche. Where their niches overlap, there is strong competition for resources. This will eventually lead to

A) speciation.
B) emigration.
C) competitive exclusion.
D) total extinction of one species.
E) cooperative sharing of the resources.

When two organisms with overlapping ranges and similar niches compete for resources, one species will ultimately outcompete the other for those resources. This is known as competitive exclusion, where the less successful species will either be forced to adapt to a new niche or go extinct in that area. Speciation and emigration are not necessarily the outcomes of competition, and cooperative sharing of resources is unlikely in a situation where resources are limited and competition is strong.