题目选项分析

The children in the second grade at a local elementary school scored lower on tests of math skills this year than the second graders did last year. The school board blames the disappointing results on the budget cuts that forced the school to consolidate several classes of second-grade students, thus depriving them of the individualized attention that they had previously enjoyed.

Which of the following, if true, best supports the explanation offered by the school board for the students' lower test scores?

【选项】No new textbooks were purchased by the school board this year.