Final answer:
The correct option to the question is B: 'evolution/natural selection'. Evolution refers to the change in species inherited traits over time, and natural selection, proposed by Charles Darwin, is the process by which this happens.
Step-by-step explanation:
Scientists suggest that evolution has occurred through a process called natural selection. In biological terms, evolution is a gradual process where inheritable traits change in species over generations. Natural selection, a concept theorized by Charles Darwin, is the mechanism through which evolution can occur. In the context of natural selection, those organisms with traits better suited to their environment are more likely to survive and reproduce, thus passing on these beneficial traits to next generations.
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