Which of the Following is an Example of Natural Selection

Question

Which of the following is an example of natural selection?
A)depending on the food a turtle eats,it shell may grow faster or slower
B)human beings develop freckles from being out in the sun
C)sometime during human's life they break a bone and it heals
D)a bird's beak is able to effectively crack the seeds it encounters
E)bacteria can be effectively killed by treatment with bleach

Accepted Answer

Natural selection involves the process where organisms better adapted to their environment tend to survive and produce more offspring. The example of a bird's beak being able to effectively crack the seeds it encounters illustrates an adaptation that would give it a survival advantage, fitting the concept of natural selection.