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?

The birds with longer more agile beaks.

birds that have longer beaks

Explanation:

The theory of survival of the fittest was given by Charles Darwin as the basis of the evolution of organisms. According to this concept in a given environment, there is always the presence of a limited number of resources and hence, the environment is capable of supporting only a limited number of organisms.In such an environment organisms that have specific characters which enable them to survive and compete well are the ones that will increase in its population and produce more offsprings. This is the theory of survival fo the fittest. Now in the given question, it is given that the birds have to dig deep into the ground and for these birds with longer beaks will have an advantage and will be able to survive better.