PT131.S1.Q12 > Question

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The author concludes that it’s absurd to blame synthetic carcinogens for rising cancer rates. She supports this by saying that the number of synthetic carcinogens used in preservatives and pesticides is very small compared to the number of nonsynthetic carcinogens found in plants and animals.

The author concludes that synthetic carcinogens are not responsible for rising cancer rates simply because there are fewer synthetic carcinogens than nonsynthetic ones. She overlooks the possibility that people’s exposure to synthetic carcinogens may be much more frequent or prolonged than their exposure to nonsynthetic carcinogens.

The author doesn’t overlook this possibility. Instead, she overlooks the possibility that the rise in cancer rates in recent decades is due to increased exposure to synthetic carcinogens.

The author doesn’t overlook this possibility. She simply concludes that the rise in cancer rates is not caused by synthetic carcinogens; this allows for the possibility that it is caused by something other than exposure to carcinogens.

The author is only addressing synthetic chemical compounds that are known to be carcinogenic. Whether other synthetic compounds are toxic in other respects is irrelevant.

The author concludes that synthetic carcinogens aren’t responsible for rising cancer rates simply because there are more nonsynthetic carcinogens. She overlooks the possibility that people are exposed to synthetic carcinogens much more, even though there are fewer of them.

This may be true, but it doesn’t impact the author’s argument. She’s discussing the cause of rising cancer rates, not the susceptibility of certain people to cancers caused by certain carcinogens.

PrepTest 131 - Section 1 - Question 12

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