Question

Which observation of Galápagos finches did Charles Darwin use as evidence

to support his theory of natural selection?

A. Beak size is random throughout all finch populations, showing it is
a variable trait.

OB. Beak size varies very little between island finches and mainland
finches, despite geographic distance.

C. Beak shape in finches varies according to the food source
available on each island.

OD. Beak size on islands closer to the mainland is more similar to that of mainland finches.

Answer 1

C. Beak shape in finches varies according to the food source available on each island.

Step-by-step explanation:

During his visit to the Galápagos Islands, Darwin noticed that the finches on different islands had distinct beak shapes that seemed to be adapted to the specific types of food available on each island. This observation led him to propose that the beak shape of finches had been modified over time through natural selection in response to the specific food sources present on each island. This idea became a crucial component of Darwin's theory of evolution by natural selection, demonstrating how variations in traits within a population can lead to differential survival and reproductive success based on the environment and available resources.