Letter to the editor: Your newspaper' s advertisement claims that you provide coverage of the high school' s most popular sports. Clearly this is false advertising. Of the school' s students, 15 percent compete on the track team, while only 5 percent of the students play basketball. Hence, track is far more popular than basketball, yet track gets no coverage and basketball gets full-page coverage. The reasoning in the letter to the editor is most vulnerable to the criticism that it ['bases its conclusion on a sample that is too small', 'employs as a premise the contention it purports to show', "misinterprets a key word in the newspaper's advertisement", 'criticizes the source of a claim rather than the claim itself']