Question

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 that have flatter beaks
birds that have longer beaks
birds that have wider beaks
birds that have brighter beaks

Explanation:

The "survival of the fittest" concept implies that individuals better - adapted to their environment are more likely to survive and reproduce. Since the birds need to reach worms deep under the ground, longer beaks would be a more useful adaptation for accessing their food source compared to flatter, wider, or brighter beaks.

Answer:

birds that have longer beaks