The higher the average fat intake among the residents of a country, the higher the incidence of cancer in that country; the lower the average fat intake, the lower the incidence of cancer. So individuals who want to reduce their risk of cancer should reduce their fat intake.
Which one of the following, if true, most weaken the argument?
(A) The differences in average fat intake between countries
are often due to the varying makeup of traditional diets. - WRONG. Scope irrelevant.
(B) The countries with a high average fat intake
tend to be among the wealthiest in the world. - WRONG. Similar to A this is irrelevant.
(C) Cancer is a prominent cause of death in
countries with a low average fat intake. - WRONG. So, is it the cause of Cancer. This relation if established then the choice looks considerable for further evaluation.
(D) The countries with high average fat intake are also the countries with highest levels of environmental pollution. - CORRECT. So, we might have another factor that might be responsible for Cancer either exclusively or together with fat intake.
(E) An individual resident of a country whose population has a high average fat intake
may have a diet with a low fat intake. - WRONG. If someone missed D then this is the one that makes sense. Otherwise this is about exception which does not impact passage.
Answer D.
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