Politician: Some cities have reversed the decay of aging urban areas by providing tax incentives and zoning variances that encourage renovation and revitalization in selected areas.
Conclusion (should = opinion)
This legislation, which provides tax incentives and zoning variances to encourage renovation and revitalization of selected areas, should not be commended.
Evidence
Its principal beneficiaries have turned out to be well-to-do professionals; the long-term residents these programs were intended to help now face displacement due to increased rent and taxes.
Evaluate / Goal
Typically, the correct answer to Strengthen + Principle is a conditional that sounds like "If Premise, then Conclusion", so we'll look for something like,
turns out to benefit yuppies, should not the people it was intended → not be to benefit (long-term residents) commended
We know that the correct answer should be about whether or not to commend / praise legislation. If an answer isn't a principle addressing whether or not legislation should be commended, we'll move away from it.