To compare and contrast means to evaluate the similarities and differences between two options. While to speculate simply means to predict.
To compare and contrast you would need to read the text thoughly. As you read, take note of how the advantages that Mathilde and her husband's marriage gring to their relationship.
In this case, a speculation would a one line stentence stating what you think Mathilde wil do in relation to the necklace and her husband.
Learn more about speculation at:
https://brainly.com/question/18558859
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