An inference must stay close to the evidence
A supported inference connects information in the passage through reasoning that does not require an unsupported premise. It is more than an interesting possibility, and its certainty must not exceed the evidence. If a team says, 'We cannot choose yet because our comparison of the alternatives is unfinished,' the passage supports that the comparison is not complete. It does not establish that all relevant evidence is missing or that the team opposes every alternative.
Identify the purpose of a paragraph
Ask what the paragraph contributes to the argument: an example, a qualification, an explanation, a contrast, or a response to an objection. Do not confuse the subject of a paragraph with its function. A paragraph about transport can illustrate the limits of a policy rather than propose a new transport system.
Track attitude carefully
Words such as may, provided that, and unless constrain a claim. A writer who recognises benefits but requests better evidence is cautious or qualified, not necessarily hostile. Consider the conclusion and the pattern of reasoning, not one positive or negative word.
Compare texts using a common question
Two authors may agree on the goal but disagree on implementation. Check exactly where they differ: cause, evidence, priority, or consequence.
Self-check: 'The pilot reduced waiting time, but its cost has not yet been assessed.' This supports a limited benefit and an unresolved issue. It does not establish that the pilot is cost-effective or that it should be abandoned.
For each answer, locate supporting evidence and identify any extra assumption. Reject options whose certainty or scope exceeds the passage.