单选题 Tom: Employers complain that people graduating from high school too often lack the vocational skills required for full-time employment. Therefore, since these skills are best acquired on the job, we should require high school students to work at part-time jobs so that they acquire the skills needed for today"s job market.
Mary: There are already too few part-time jobs for students who want to work, and simply requiring students to work will not create jobs for them.
Which one of the following most accurately describes how Mary"s response is related to Tom"s argument?

A、 It analyzes an undesirable result of undertaking the course of action that Tom recommends
B、 It argues that Tom has mistaken an unavoidable trend for an avoidable one
C、 It provides information that is inconsistent with an explicitly stated premise in Tom"s argument
D、 It presents a consideration that undercuts an assumption on which Tom"s argument depends
E、 It defends an alternative solution to the problem that Tom describes

【正确答案】 D

【答案解析】[解析] Tom认为兼职工作可以使高中生获得职业技巧，而Mary则表明兼职工作太少，也即Mary的应答削弱了Tom的论证所依赖的假设，因此(D)为正确答案。