Which statement best describes variation within a species?

Variation within a species refers specifically to the differences that exist among individuals of the same species. This can include differences in traits such as color, size, shape, and behavior. These variations arise due to a combination of genetic factors and environmental influences, contributing to the biodiversity within that species.

Understanding this concept is crucial for studies in evolution and natural selection, as variation is the raw material that evolution acts upon. Individuals with advantageous traits for their environment are more likely to survive and reproduce, passing those traits on to future generations. This highlights the importance of biological diversity and the varying characteristics found in members of the same species, which can lead to the adaptation and evolution of that species over time.