The anticipated retirement of tens of thousands of baby boomers will create an unprecedented opportunity to move significant numbers of people into career-track jobs at family-supporting incomes. Major industries, from health care and construction to automotive repair, will soon face deep shortages of workers as a result of projected growth and boomer retirements. Fortunately, many of these jobs have relatively low barriers to entry and could be filled by out-of-work young people. To achieve this result, the city government should convene employers and educators to determine how best to create paths of upward mobility in these fields.

Which of the following, if true, most weakens the argument?
a) Immigration reform will limit the pool of available workers.
b) Government efforts have been shown to affect employment trends only rarely.
c) The best available positions require skills not possessed by the vast majority of the unemployed.
d) A small proportion of baby boomers will not retire as soon as is anticipated.
e) Many out-of-work young people are unaware of these looming employment opportunities


I choose E but answer is B.
In B, rarely is too vague a term. We might not be sure whether Government efforts will show effect in this case or not.

I think that this answers your concern, but let me know if it doesn't.

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