Question

what is natural selection?
a method for classifying different species of animals.
the way organisms choose their partners for reproduction.
the process that drives the evolution of species.
a process where an individual organism changes its traits to suit an environment.

Explanation:

Natural selection is the process that drives the evolution of species. The first option describes a classification method, the second is about mate selection, the fourth is about an organism changing traits (more like adaptation), while the third option correctly defines natural selection as the process driving species evolution.

Answer:

The third option (The process that drives the evolution of species)