The cell cycle is made of 5 different phases:
• Gap 0 (G0) - Where the cell carries out normal cell processes
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• Gap 1 (G1), - Where the cell grows in preparation for DNA synthesis
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• Synthesis (S), - Where DNA replication takes place
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• Gap 2 (G2), - Where the cell grows in anticipation of mitosis
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• Mitosis (M), - The process of cell division.
The Gs and S phases are collectively known as interphase, so B, interphase, would be the right answer.