Only a very small percentage of people from the service professions ever become board members of the 600 largest North American corporations. This shows that people from the service professions are underrepresented in the most important corporate boardrooms in North America. Which one of the following points out a flaw committed in the argument? ['Six hundred is too small a sample on which to base so sweeping a conclusion about the representation of people from the service professions.', 'It is a mistake to take the 600 largest North American corporations to be typical of corporate boardrooms generally.', 'The percentage of people from the service professions who serve on the boards of the 600 largest North American corporations reveals little about the percentage of the members of these boards who are from the service professions.', 'It is irrelevant to smaller corporations whether the largest corporations in North America would agree to have significant numbers of workers from the service professions on the boards of the largest corporations.']