A survey was distributed to all of the accountants at a federal agericy to determine what type of food they would like to eat at an upcoming picnic. In the survey, they were asked whether their first choice was hot dogs or hamburgers. Of the 50% of accountants who responded to the survey, 60% indicated that their first choice was hot dogs, while 40% indicated that their first choice was hamburgers. Clearly, most accountants at this federal agency would prefer to eat hotdogs rather than hamburgers at the picnic.
Which of the following statements, if true, would most seriously weaken the above argument?
? The majority of accountants who responded to this survey would have chosen a vegetarian dish as their first choice had a vegetarian dish been presented as an option.
? The first choice of 70% of the accountants who did not respond to this survey is hamburgers.
? It is possible that hot dogs and hamburgers may not be the only items served at the picnic.
? The accountants who did not respond to this survey don't really like hot dogs or hamburgers.
? If pizza had also been included in the survey as a food choice, then 90% of accountants who responded to the survey would have selected pizza as their first choice.
