Which of the following would be an example of adaptation through natural selection?

a. Some honey badger populations overlap with king cobra populations. In these overlapping areas, honey badgers that had a venom-resistant mutation are able to catch and eat king cobras as an additional source of food, increasing their resources. This mutation has spread through the population over several generations.

b. Two parents that are both World Weightlifting Champions are about to have a baby. They expect their newborn to be a muscle-bound girl.

c. Gopher snakes and diamond back snakes both have a diamond pattern that makes them look similar. A female gopher snake noticed that the nearby rattler scared off predators with its loud rattle, so the gopher snake started using a similar tactic, by vibrating its tail in the leaves. Any offspring she has will vibrate their tails as well.

d. A pesticide-resistant locust population lives in an agricultural field that is getting too hot. The population moves to a cooler, non-agricultural area. The next generation of offspring will not be pesticide-resistant because they have no need to be.