When Riis writes "the necessities of the poor became the opportunity of their wealthier neighbors," he uses...

When Riis writes "the necessities of the poor became the opportunity of their wealthier neighbors," he uses __________ to turn a word that normally suggests possibility and progress into an accusation of exploitation.
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refinement
signposting
transparency
evidence
A reader who notices that Riis places economic cause before human effect and can trace the chain of reasoning step by step is responding to the __________ of the passage's structure.
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Riis's choice to keep his reasoning visible — placing cause before effect so the reader can follow and challenge each step — is what makes the passage an example of clear __________ rather than manipulation.
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A reader who asks "Is this example typical of all tenement buildings, or just one?" is identifying where Riis's argument is most vulnerable — the quality of his __________.
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