(Science Exam Due Today)! Darwin studied finches and their beak shapes/sizes in the Galapagos island. He found that over time, different species of finches had adapted to their environment. There were different beak types on the finches now. Which of the following best explains why this happened? (Hint it's not "B)" I already tried).

A) A few finches had differently shaped beaks and were able to eat insects instead of seeds. They survived due to less competition for food and over time, their population increased.

B) Some finches beaks stretched to reach hard to eat seeds, creating a longer shape.

C) A few finches had longer beaks to be able to defend against predators. They survived and over time, their population increased.

D) Some finches grew longer beaks during their lifetime and were able to defend against predators.