Passage summary: Physician compares the number of ulcer prescriptions of three countries, which have approximately the same population size and ulcer-related factors. He concludes that because the ulcer prescriptions in his country across socioeconomic levels are rarer than those in the other two, there must be fewer ulcers per person in his country.
Goal:
We need to find support (strengthen) his claim that there must indeed be fewer ulcers per person in his country. To do so, we need to address any obvious gaps in the argument. Closing gaps will strengthen the argument.
Major gaps and strengtheners with regards to physician's country: Gap: Are doctors perhaps more hesitant to prescribe?
Strengthener: They are not more hesitant than the other two countries
Gap: Do most people not believe in Western medicine?
Strengthener: They do as much as they do in the other two countries
Gap: Are people not seeing doctors as much for ulcers?
Strengthener: They see doctors the same as they do in the other two countries
Gap: Is the country underreporting its ulcer numbers?
Strengthener: It reports just as accurately as the other two countries
Answer choices: (A) The two countries that were compared with the physician’s country had approximately the same ulcer rates as each other.
WRONG - let's say country X and country Y had an ulcer rate of 80%. How would it strengthen the physician's claim in any way? It doesn't(B) The people of the physician’s country have a cultural tradition of stoicism that encourages them to ignore physical ailments rather than to seek remedies for them.
WRONG - obvious weakener as it goes in the opposite direction of the physician's claim of fewer ulcers per person, therefore attacking it (C) Several other countries not covered in the physician’s comparisons have more prescriptions for ulcer medication than does the physician’s country.
WRONG - we're only concerned with the three countries in discussion (D) A person in the physician’s country who is suffering from ulcers is just as likely to obtain a prescription for the ailment as is a person suffering from ulcers in one of the other two countries.
CORRECT - this is the strengthener to one of the gaps above. Doctors are not more hesitant and prescriptions are handed out in a similar way in all three countries (E) The physician’s country has a much better system for reporting the number of prescriptions of a given type that are obtained each year than is present in either of the other two countries.
WRONG - tricky one, however "better" does not automatically imply accurate. Maybe it's more sophisticated, faster, etc. Even if we were to assume that the other two countries are less accurate in their reporting, this option doesn't tell us whether they undercount, double count, etc.