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Scratch-Work Organization and Verification
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GMAT
GMAT.030 Scratch-Work Organization and Verification
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A student uses backsolving and finds that answer choice B fails after two steps. Which scratch-work habit best supports efficient continuation?
A
Erase B's work to keep the scratch paper clean before testing another choice.
B
Leave B's substituted result and failure reason visible, then test the next candidate in a new row with the same labeled columns.
C
Rewrite the whole problem after every failed choice.
D
Mark B with a question mark only, so it can be reconsidered later.
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