A study published by the Department of Education shows that children in the central cities lag far behind students in the suburbs and the rural areas in reading skills. The report blames this differential on the over-crowding in the classrooms of city schools. I maintain, however, that the real reason that city children are poorer readers than non city children is that they do not get enough fresh air and sunshine.
Which of the following would LEAST strengthen the author’s point in the preceding argument?
(A) Medical research that shows a correlation between air pollution and learning disabilities
(B) A report by educational experts demonstrating that there is no relationship between the number of students in a classroom and a student’s ability to read
(C) A notice released by the Department of Education retracting that part of their report that mentions overcrowding as the reason for the differential
(D) The results of a federal program that indicates that city students show significant improvement in reading skills when they spend the summer in the country
(E) A proposal by the federal government to fund emergency programs to hire more teachers for central city schools in an attempt to reduce overcrowding in the classrooms
Source: Master GMAT