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Writing & Language

A number of growing career fields are facing a crisis: a shortage of educators to train a future workforce. Specifically, postsecondary training programs in trade and industrial occupations such as welding, manufacturing, and auto repair lack enough qualified instructors to prepare students to embark on these career paths. The problem is compounded by the fact that it is difficult to lure skilled workers away from jobs in these more lucrative trades for jobs in the modestly paying field of education. To address the shortage, postsecondary training programs would do well to recruit skilled professionals from T&I fields to teach as adjunct faculty (part-time instructors). Teaching part-time would allow experienced professionals to help educate the future workforce while retaining their positions in the private sector.

A.No change
B.as, welding, manufacturing,
C.as: welding, manufacturing
D.as: welding manufacturing

答案和解析

答案：A

解析：

Choice A is the best answer because it appropriately uses commas to separate items in a series (the occupations listed) and doesn't introduce punctuation in unnecessary places.