The city council had assured residents that the new tax would fund only road repairs. ______, an audit later revealed that a substantial…

The second sentence reveals information that contradicts the assurance given in the first sentence, and in fact signals precisely that kind of correction, presenting what turned out to be true against what was originally claimed. Likewise would suggest agreement between the two sentences, but the audit's finding directly conflicts with the original assurance. For instance would frame the second sentence as an example of the first's claim, not a contradiction of it. Consequently would incorrectly suggest the redirection was a result of the original assurance instead of a contradiction revealed later.