Let us recall what meiosis is:
Listing out all our phases, we have:
0. Interphase (which isn't listed on this diagram) - homologous chromosomes duplicate
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1. Prophase I - cell nucleus dissolves and crossing over occurs
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2. Metaphase I - homologous chromosomes line up at middle plane
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3. Anaphase I - homologous chromosomes are split by the movement of microtubules
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4. Telophase I + Cytokinesis - formation of 2 new cells and splitting cytoplasm
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5. Prophase II - similar to Prophase I, except now happening to 2 different cells with separate chromosomes
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6. Metaphase II - similar to Metaphase I
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7. Anaphase II - similar to Anaphase I
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8. Telophase II + Cytokineses - similar to Telophase I (end result of 4 cells)
Applying this information to the context of the problem, we have the best answer choice to be A.
Duplication happens first (interphase), then crossing over happens (Prophase I), then homologous chromosomes separate (Metaphase and Anaphase I), then sister chromatids separate (MMetaphas and Anaphase II).