Advertiser: There' s nothing wrong with a tool that has ten functions until you need a tool that can perform an eleventh function! The VersaTool can perform more functions than any other tool. If you use the VersaTool, ttherefore, you will need additional tools less often than you would using any other multiple-function tool. The reasoning in the advertiser's argument is most vulnerable to criticism on the grounds that the VersaTool might ['not be able to perform individual functions as well as single-function tools', 'be able to perform fewer often-needed functions than some other multiple-function tool', 'cost more than the combined cost of two other multiple-function tools that together perform more functions than the VersaTool', 'include some functions that are infrequently or never needed']