Darwin claimed that the differences in the beak formation between the varieties of finches species found on the Galapagos Islands were related to their food source. Thus, the correct option is B.
What is Species?
Species may be defined as a cluster of organisms that can reproduce with one another in nature and produce fertile offspring. Each type of species has some common as well as diverse modes of action, characteristics, and patterns of lifestyle.
Depending on the food source available on the particular islands, different shapes of beaks formed between the varieties of finches species. This developed beak helps the species of finches to consume a specific type of food more easily and comfortably.
Therefore, the correct option for this question is B, i.e. food source.
To learn more about Darwin finches, refer to the link:
https://brainly.com/question/12856192
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