D is the correct answer. Hope this helps.
The best answer to go with is b you’re welcome
Meiosis makes sperm and eggs. ... The result is 4 haploid daughter cells known as gametes or egg and sperm cells (each with 23 chromosomes – 1 from each pair in the diploid cell). At conception, an egg cell and a sperm cell combine to form a zygote (46 chromosomes or 23 pairs).
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Sporozoites that have undergone radiation. The PfSPZ vaccine has been in development by the company. The premise of the vaccine is use to use these radiated sporozoites inside the body to bring forth an attack on the sporozoite, which will help the body prevent itself against further attacks of malaria. Due to its promising nature, the U.S FDA department granted it the fast track designation in 2016.