which is a requirement for natural selection to occur?\nheritable variations for some traits\nthe ability of…

which is a requirement for natural selection to occur?\nheritable variations for some traits\nthe ability of an organism to improve a trait during its lifetime\nequal probability of survival for all offspring\nfewer offspring than the environment can support
Answer
Brief Explanations:
Natural selection requires heritable variations in traits. These variations allow some individuals to be better - adapted to their environment and have a higher chance of survival and reproduction. Lamarckian idea of an organism improving a trait during its lifetime is not a requirement for natural selection. Offspring do not have equal survival probability, and there are usually more offspring than the environment can support, which leads to competition.
Answer:
heritable variations for some traits