Final answer:
The word 'extricate' means to remove or free something from a difficult or tangled situation, in this case, Molly's sweater from the stuck zipper.
Step-by-step explanation:
The word 'extricate' means to remove or free something from a difficult or tangled situation. In the context of the sentence, Molly's mom was able to extricate the sweater from the zipper of her coat. This means that her mom was able to remove the sweater from the stuck zipper. So, option c. remove is the correct definition of 'extricate' in this context.
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