Correct Answer: C
Explanation:
Although the author may be of the opinion that the best training is done in hilly areas, he may still appreciate the many benefits that a gymnasium offers. Similarly, there could be several reasons why the China Olympic team does not train in hilly areas. The answer to Choices B and E don’t present any problem to the author. Only Choice C would seem to undermine the crux of the author’s assertions that the best long disgrace runners are those who train in hilly areas.