D. Prophase1 because this has to happen first so the rest of the stages can continue with their own events
Your answer should be increasing in number
Explanation: Gametes are the cells used during sexual reproduction to produce a new individual organism or zygote. The male gamete, sperm, is a smaller, mobile cell that meets up with the much larger and less mobile female gamete, egg or ova. Both sperm and egg are only haploid cells. They only carry half of the chromosomes needed.