Zylox, a new artificial sweetener used exclusively in energy drinks, has been shown to be carcinogenic in rats, but only when consumed in extremely high amounts. To consume a quantity of Zylox equivalent to what was given to the rats in the studies, a person would need to drink 30 cans of Zylox-sweetened energy drinks daily. Therefore, Zylox is considered safe for human consumption. For the conclusion that Zylox is safe for humans to be valid, which of the following must be true?

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Cancer from carcinogenic substances develops more quickly in rats than in humans.

If all food additives currently used were tested, some would be found to be carcinogenic in rats.

People consume fewer than 30 cans of Zylox-sweetened energy drinks per day.

Correct

People can achieve significant health improvements by managing their weight with the help of artificially sweetened energy drinks.

Some studies conducted on Zylox were not pertinent to the question of its carcinogenicity in humans.

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Official Explanation

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To conclude that Zylox is safe for humans, it must be true that people do not consume the same high quantities that caused carcinogenic effects in rats. Since the studies indicate that rats were given amounts…

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Comments

ChrisJan 14, 2025

Thank for sharing!!!

FabienFeb 9, 2025

thanks for the answer

SUMANSep 15, 2024

thanks for posting

TanishkaJul 8, 2024

thanks for the answer

What this question tests

What it tests

Whether you can identify the unstated assumption a critical-reasoning argument depends on.

Common trap

Picking an option that strengthens the argument or is merely relevant instead of one that is required.