It is a perfect example of a natural selection.
(I'm not sure if this is the exact answer that you are looking for.)
Cells for sexual reproduction is meiosis
Hey there!
There are<em> two </em>possible answers to your question.
A. Reproduction.
B. Cell division.
Answer choice A fits the fact of both organisms and cells. This would be your best answer.
Answer choice B fits the fact of cells reproducing. If the sentence had used the term "reproduce' this<em> might</em> be the right answer. But it did not, so...
Your best answer is going to be <u>Reproduction.</u>