Tariffs on particular products tend to protect the small percentage of the population that works in industries that make those products while hurting everyone else through higher costs. Polls show that in fact most people oppose such tariffs. So politicians would be more likely to be reelected if they voted against these tariffs. Which one of the following is an assumption on which the argument relies? ["Supporters of tariffs on particular products are not significantly more likely than opponents to base their vote for a politician on the politician's stand on this issue.", 'Politicians should support only general tariffs, since such tariffs would be more widely popular with voters than tariffs on particular products.', 'Politicians should never support measures that favor only a small percentage of the population.', 'Politicians always vote according to what is most likely to get them reelected.']