Answer:
b. Natural selection can preserve and distribute mutations that increase the fitness of organisms
Explanation:
Natural selection is the process whereby an organism survives an unfavourable environment by adaptation and pass on the favourable traits needed for survival to their offspring, this process of adaptation can lead to mutations. Thus, natural selection promotes the preservation and distribution of traits (beneficial mutations) that increases survivability and fitness.
i feel like the the governor or president should address something about racism because it really isn't the job of the citizens but i'm glad that the citizens do address it and i would probably address it when im older but its sad that they really don't address it and it's probably because they don't want to do with it and they will someday i have no idea if this was the answer you were looking for or even if this is an answer but i thought i would just say what i thought i don't even think this is what you asked for but anyways .-.
D. Famine
The Minoan Civilization did not die out because of famine. :)