The statement that best describes the process of natural selection in finches is:
A. Over time, the finches that were born with beaks better suited to the available food supply in their habitats survived and reproduced.
This description aligns with the principles of natural selection, where certain traits that confer an advantage in survival and reproduction become more common in a population over time. The other options either suggest artificial selection (B), incorrect evolutionary processes (C), or a misunderstanding of inheritance (D).