In a medical study of all of the residents of Groverhill, 35 people reported consulting their physician last year seeking relief from severe headaches. Those same physicians' records, however, indicate that 105 consultations occurred last year with Groverhill patients seeking relief from severe headaches. Obviously, then, many residents who consulted physicians for this condition did not remember doing so. The reasoning in the argument is most vulnerable to criticism on the grounds that the argument ['overlooks the possibility that residents of Groverhill visited their physicians more than once during the year for the same condition', 'fails to provide any evidence to support the claim that the residents of Groverhill have an unusually high occurrence of severe headaches', 'takes for granted that every resident of Groverhill who suffers from severe headaches would consult a physician about this condition', 'fails to consider whether any residents of Groverhill visit physicians who are not located in Groverhill']