The number of young adults that are illiterate has dropped significantly in a certain county over the last fifteen years. Education officials attribute this decrease entirely to improved conditions in the schools, which made for a better teaching environment, reducing the level of illiteracy.
Which of the following, if true, would most seriously weaken the education officials’ explanation for the lower incidence of the disease?

Question

Examsnet · Accepted Answer

Correct Answer is :  Because of a new assessment scale, many people who until this year would have been considered illiterate are now considered low-level readers.

GMAT Verbal Reasoning Practice Test 2