According to the concept of “survival of the fittest," if a population of birds eats worms that they find deep under ground by using their beaks, which members of the bird population would be more fit ?

Birds with longer beaks can reach worms buried deep underground more easily. They are more likely to get enough food, survive, and reproduce, so they would be considered more fit. The correct choice is birds that have longer beaks.

AI-written and checked against the verified answer.