A study of a math program implemented in several pre-schools indicates that children who received the specialized Math Plus math education between the ages three and five had significantly higher math scores in 3rd and 4th grade than their classmates who did not receive this instruction. The proponents of the math argue that the introduction of this program for all children age three to five will significantly improve their chances for success in school.
Which of the following, if true, would most seriously weaken the above argument?
(A) Most parents send their children to preschool for social development and do not have a clear idea about what types of education they want for their children.
Children idea has no influence on the conclusion
(B) Cognitive abilities of 3- to 5-year-old children are constantly changing.
Can hold for it ,but doesn’t seem so close to conclusion
(C) The children in the pre-schools that were studied had previously been exposed to another math enrichment program.So it means these children had already some base of mathematics, not because of preschool maths education.
Strong option
(D) Children are not really interested in enrichment programs in preschool.
Same as A, no affect on conclusion
(E) The cost factor needs to be specified and established before a large scale program can be undertaken.
Irrelevant in this context
Final answerC