Self-study
Bacteria from food can survive for several days on the surface of plastic cutting boards, but Support bacteria can penetrate wooden cutting boards almost immediately, leaving the surface free of contamination. ██████████ ██████ ███████ ███████ ██████ ███████ ███████ ███████ ████ ███ ██ ██████ ██ █████ ██ ███████ █████ █████████████ ████ ████ ██ ███ ██ █████ ██████ ████ ███ ██ ██████ ████ ██████ ██ ███████████
Summary
The argument concludes that wooden cutting boards only need to be wiped off in order to prevent bacterial contamination of food cut on them, not washed like plastic cutting boards. This is supported by the claim that bacteria can sink into wooden cutting boards very quickly, rather than lingering on the surface.
Notable Assumptions
The argument jumps straight from bacteria sinking into wooden cutting boards to the conclusion that there must be no need to wash those cutting boards to prevent contamination. This assumes that once food debris is wiped off, there’s no way for the bacteria that penetrated a wooden cutting board to recontaminate the surface.
5.
Which one of the following ██ ██ ██████████ ██ █████ ███ ████████ ████████
a
Washing plastic cutting ██████ ████ ███ ██████ ███ ████████ ████ ███ ████████
Whether or not washing removes all the bacteria from plastic cutting boards is irrelevant—the argument is only concerned with what steps are necessary to prevent contamination for wooden cutting boards.
b
Prevention of bacterial █████████████ ██ ███ ████ ███████ ██ █████ ██████ ███████ ██████ ███ ████████ ██ ███████ ███████ ███████
The argument doesn’t involve any broad claims about whether wooden or plastic cutting boards are overall superior, so this is irrelevant.
c
Food that is ███ ███████ ████████████ ████ ████████ ███ ██ ████████████ ████ ██ █████ ███ ██ ████████████ ███████ ███████
The argument isn’t concerned with every possible way food can be contaminated, it’s only considering when wooden cutting boards can contaminate food. Other sources of contamination are irrelevant.
d
Bacteria that penetrate ████ ██████ ███████ ██████ ██ ███ ████████ ██ ███ ███████ █████ ███ ███████ ██████ ████ ████ █████
Reemerging after use would be one way for bacteria that penetrated into a wooden cutting board to recontaminate the surface. If we negate this, then bacteria can reemerge, which would mean that wiping the surface clean would not suffice to prevent contamination.
e
Washing wooden cutting ██████ █████ ████████ █████ ███ ███████ ██ ███ ███████ ███████
What would happen if someone washed a wooden cutting board isn’t relevant to the argument, which claims that washing is not necessary to prevent contamination from wooden cutting boards.