There are certain 'rules' in general for each question type. I have the following notes in a raw format (for my understanding), of course the list can be exhaustive but it is important to keep these in mind. You can compile it from CRBible.
MUST BE TRUE/INFERENCE:
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correct answer is:
- Only from the stimulus.
wrong answers:
-Could be true or likely to be true
-Exaggerated answers
-"New" information answers
MAIN POINT:
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correct answer is:
- Only from the stimulus.
** Any answer that is a paraphrase of the conclusion of the argument will be the correct answer.
wrong answers:
-Answers that are true but do not encapsulate the author's point.
-Answers that repeat the premises of the argument.
WEAKEN:
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correct answer:
- Attacks the conclusion (which means identify the conclusion first)
wrong answers:
- Strengthening
- Out of scope
CAUSE AND EFFECT:
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Cause and effect mostly have reasoning flaws.
ASSUMPTION AND STRENGTHEN:
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New information is allowed.
Strengthens: Can strengthen 1% to 100%. ( which means that correct answer can also strengthen the argument slightly, so also look out for such subtle answers)
Assumption: Is always necessary, unstated premise that is 'required' for the argument to be true.