Students at Glenmont High School spend nine hours a day at school, five days per week, while students at Ridgewood High School only spend seven hours a day at school, five days per week. On a recent test, students at both high schools had the same scores in math and reading. Therefore, Glenmont High School could reduce the amount of time students spend in class without reducing the quality of instruction in all subjects.
The argument above is most vulnerable to criticism on the grounds that it
A)Equates the value of math scores with reading scores.
B)Compares two things which are not similar enough to warrant comparison.
C)Presumes, without providing justification, that math and reading scores are always constant.
D)Presumes, without providing justification, that what is true for some subjects is true for all.
E)Confuses the quality of instruction with time spent in a classroom.

Question

Quizplus · Accepted Answer

The argument is most vulnerable to criticism on the grounds that it presumes that what is true for some subjects must be true for all. While math and reading scores were the same for the two schools, we know nothing about results in other areas, leaving the conclusion that Glenmont could reduce classroom time without reducing the quality of instruction for all subjects unsupported.

Students at Glenmont High School Spend Nine Hours a Day