When going over events help you understand is because you start to notice things once you look over it over and over. like with a movie you watched a hundred times you start to notice small details and mistakes that happen. it help you not just see as a whole but in small fractions.
I think it would be a because you don't use diagrams to show graphs because they are themselves a diagram
<span>A bed of yellow flowers is used as a symbol of hope in "Marigolds."</span>
I would say <span>B. revising for unity.
A. could be a way of editing but it could be changing sentences and not actually taking out or adding sentences like B.
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