In a country, the number of new graduates from business school who accepted positions in private industry was 6,000 in 1970 but only 3,000 in 1985. This fact shows that a smaller proportion of new business school graduates chose to work in private industry in 1985 than in 1970.
Which of the following, if true, casts most doubt on the conclusion above?
Pre-thinking: The passage is trying to trap us into making conclusion about proportions from absolute numbers of new graduates who accepted positions in private industries in two different years (1970 and 1985) while telling us nothing about the absolute number of graduates in those aforementioned years.
A. Private industry made greater efforts to recruit new business school graduates in 1985 than in 1970.
-- IRRELEVANT info
B. Salaries in private industry for new business school graduates were higher in 1985 than in 1970.
-- salary difference is not of concern in this passageC. Nonprofit organizations employed a smaller number of new business school graduates in 1985 than in 1970.
-- We don't know about all employment sectors to deduce about private industries from this
D. There were half as many new business school graduates in 1985 as there were in 1970.
-- CORRECT, this says the no. of new graduates decreased by half in 1985 from 1970. Thus, private industries employment decrease by same 50% equates the proportion for both years. Thus, the conclusion that a smaller proportion of new business school graduates chose to work in private industry in 1985 than in 1970 is weakened.
E. Half of the new business school graduates in 1985 accepted positions in government.
-- Same as CSo, answer is
D