If you start with 60 chromosomes and end with 60 chromosomes

If you start with 60 and end with 60, then no change has occurred. Mitosis is part of cell replication, so if we end with the same number as we started with, then no form of mitosis has occurred.

I hope this helps! :)

i think the answer would d

it takes hundreds of years to become stable.

if you have another question lmk.