Gamba: Muñoz claims that the Southwest Hopeville Neighbors Association overwhelmingly opposes the new water system, citing this as evidence of citywide opposition.
Implied Rebuttal Conclusion
We should not take the Association's opposition to the new water system as evidence of citywide opposition to the new water system.
Conclusion (should = opinion)
One should not assume that the few opposing votes from the Association represent the view of the majority of Hopeville’s residents.
Evidence (furthermore = evidence)
Only 25 of 350 members voted, with 10 in favor of the system.
The 15 opposing votes represent far less than 1 percent of Hopeville’s population.
Evaluate
The argument is set up to rebut a reasoning move that Muñoz is making. The author is rebutting this reasoning move by digging into the actual data (only 25 votes, with a 10 vs. 15 split) and then putting that data into perspective (less than 1% of the city's population).
In familiar LSAT terms, we could say our author is saying,
Goal
Let's find any answer that descriptively matches the argument, but it will likely deal with language about digging into Muñoz's evidence to expose how small the sample size is.