Which of the following most accurately describes what occurs during the process of natural selection? Random mutations causes individuals within a population to have slightly different traits Those who happen to have traits better suited to an environment will have a better chance of surviving and leaving offspring. Population of organisms finds itself in a changed environment 18 This causes some of the individual organisms to undergo mutations to adapt II Those that do not mutate will be more likely to die out. Organisms that have the most useful traits kill their competitors 1 This leaves behind only organisms that have the most useful traits..