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C. Selective breeding

Explanation:

The text says that people selected the best ones to breed together to get what they want. This is called selective breeding.

Mitosis in an eukaryotic cell cycle occurs after the G2 phase (option b). This is the final stage of interphase and during this time, the cell continues to grow as well as create new proteins. Successful completion of this phase results in the commencement of Mitosis.