Answer :
The choice that best describes when a cell becomes 2n is : ( C ) after meiosis when froming a zygote
Mitosis vs Meiosis
Mitosis is a single round division of a parent body cell which produces two ( 2 ) identical diploid daughter cells ( 2n cells ). while Meiosis is the divison of parent gametes which produces four ( 4 ) haploid daughter cells. Meiosis leads to the production of gametes.
Hence we can conclude that The choice that best describes when a cell becomes 2n is : after meiosis when froming a zygote
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