transmission of acquired characteristics. use or disuse of their beaks. natural mutagens. natural selection.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: According to Darwin's theory of evolution, the variations among finches that he observed in the Galapagos Islands resulted from
Possibilities:
- transmission of acquired characteristics.
- use or disuse of their beaks.
- natural mutagens.
- natural selection.

natural selection.