GMAT Critical Reasoning
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Source: GWD
Level: 4
Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the fracture. When a number of follow-up x-rays were reviewed, however, all the fractures that had initially been judged stable were found to have healed correctly. Therefore, it is a waste of money to order follow-up x-rays of ankle fracture initially judged stable.
Which of the following, if true, most strengthens the argument?
- A Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.
- B Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.
- C X-rays of patients of many different orthopedists working in several hospitals were reviewed.
- D The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
- E Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.