Over time, phrases in the English language that were once widespread, such as “the cat’s pajamas,” fall out of general use and cease to be taught in English classes. Government agencies set the standards for educational curricula in many subjects, including English, to which schools must adhere. Since English teachers teach only those topics mandated by government curriculum standards, and students generally learn only those uses of language taught by English teachers,
the use and understanding of older phrases could be lost. Therefore, the government educational agencies should require the inclusion in educational curriculum of once-popular usages of the English language that are no longer in widespread use.
Which of the following roles is performed by the bolded phrase in the argument above?
(A) It summarizes the position advocated by the author of the argument.
(B) It states a premise supporting the conclusion, but which itself is unsupported.
(C) It presents a subsidiary conclusion that supports the position of the author.
(D) It provides support for a conclusion stated earlier in the argument.
(E) It provides a specific example of the general position used to support the conclusion.