Which of the Following Is Not an Example of Evolution

Which of the following is not an example of evolution?

A) Beak size in a population of birds becomes larger from one generation to the next because larger beaked birds had higher reproductive success and passed the trait to their offspring.
B) Over long periods of time, whales gradually lost their hindlimbs.
C) When humans travel to a high altitude, their physiology changes to accommodate lower oxygen levels.
D) None of the given choices are correct.