Question

the biological species concept is one of the most important evolutionary theories. it states that a species is
○ a population that lives in the same area but does not experience the bottleneck effect.
○ a group of individuals that can interbreed and produce fertile offspring.
○ a population that is able to adapt to new environments.
○ a group of individuals who undergo genetic drift in responses to changes in their environment.
○ a group of individuals that is geographically isolated from other similar individuals.

Explanation:

The biological species concept defines a species as a group of organisms capable of interbreeding to produce viable, fertile offspring. Other options describe unrelated concepts (bottleneck effect, adaptation, genetic drift, geographic isolation) rather than the core definition of the biological species concept.

Answer:

a group of individuals that can interbreed and produce fertile offspring.