d when mathilde realizes she has lost the necklace
the answer is a.
One of the stages in the revision process is checking the organization of the text. That means that reorganizing paragraphs in a rough draft could definitely serve as an example of revision.
i'm pretty sure it's true but you don't necessarily have to organize your text to revise it. You could just look over the text and edit misspelled words for it to be considered revision. I hope this helps.