medium · LSAT Logical Reasoning
A researcher states: "The bacteria found on traditional wooden cutting boards penetrate the surface immediately, effectively leaving the surface uncontaminated. Thus, these boards need only be wiped, not washed, to prevent the contamination of food."
Which of the following is an assumption required by the researcher's argument?
- Bacteria that have sunk into the wood will not subsequently work their way back up to the surface where food is cut.
- Wiping a wooden board down with a cloth removes surface bacteria far more reliably than thoroughly washing it does.
- Every species of bacteria that is typically found on cut food poses a genuine health risk to a person if it is ingested.
- Plastic cutting boards, by contrast, will contaminate the food prepared on them more readily than wooden boards do.
- No bacteria of any kind whatsoever are ever present on the exposed cutting surface of a wooden board that is in use.
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More LSAT Logical Reasoning practice
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