Sentence Correction (SC) | The newly launched healthcare scheme extends the assurance

I know "assurance" means "insurance" in French, and I think it's used to refer to insurance in UK English, but I've not heard it used as a synonym of 'insurance' in North American English, so here it presumably means something like 'promise'.

The word 'extend' can mean 'offer', but when it does, it has a certain connotation. Used that way, it really means someone is holding something out (you could visualize, either literally or metaphorically,
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