Self-study
Safety expert: Tuna is often treated with carbon monoxide so that it will not turn brown as it ages. ████████ ████ ████ ██████ ████████ ████ ███ ████ ██ ███████ ██ ███ ████ ████████████ █████ ██ █ ██████ ████ ████ █████████ ████ ██████ ██ ████ ██████ ███████ ████ ████ ██████ █████
"Surprising" Phenomenon
Why might treating tuna with carbon monoxide cause more people to get sick from eating tuna when the carbon monoxide treatments don’t make the fish harmful in any way?
Objective
The right answer will introduce some reason why treating tuna with carbon monoxide might cause more people to get sick from eating tuna. That reason cannot be a direct health risk of the carbon monoxide treatment, because the stimulus tells us that the treatment doesn’t make the tuna harmful. Instead, the answer must describe some causal impact that the treatments have on the way tuna is consumed.
5.
Which one of the following, ██ █████ ████ █████ ██ ███████ ███ ████████ ███████████ ██ ███ ██████ ████████ ███████████
a
Workers in fish ██████████ ██████ ███ ██ ████████ ██ ████████ ██ ██████ ████████ ██ ███ ███████████ ██████ ██████████ ███ ███ ████████ ██ █████ ███████
The stimulus says that the carbon monoxide treatments might cause more sickness specifically from eating tuna. If we were looking for a reason why the carbon monoxide treatments might cause more people to get sick in general, this would be perfect.
b
Over the last ███████ ██████ ████ ███████████ ███ █████████ ██ ████ █████ ██ ███ ██████
This has nothing to do with the carbon monoxide treatments, so it doesn’t help resolve the discrepancy.
c
Tuna that is ███████ ████ ██████ ████████ ████████ ██ ███████ ██████████ ████ ██ ███ ███████ ██ ███ █████ ████ ██ ███ █████ ████ ██████████
This explains why treating tuna with carbon monoxide might cause more people to get sick from eating tuna: if people can’t see that the tuna has gone bad, they might eat spoiled tuna (ew) and get sick! With untreated tuna, people are more likely to see when the fish goes bad.
d
Treating tuna with ██████ ████████ ██ ███ ████ ███ ██ ████ ██ ████ ███████ █████ ██ ██ █████
This doesn’t provide any information about how the carbon monoxide treatments might lead to more people getting sick from eating tuna, so it doesn’t help resolve the discrepancy.
e
Most consumers strongly ██████ ████ ████ ██ ███ █████ ███████ ████ ███████ ████ █████ ████ ██ ███ ██████
This might explain why companies would want to treat their tuna with carbon monoxide, but it doesn’t provide any information about why the treatments might lead to more people getting sick from eating tuna.