Some visitors to the park engage in practices that seriously harm the animals. Surely, no one who knew that these practices seriously harm the animals would engage in them. So it must be concluded that some of the visitors do not know that these practices seriously harm the animals. The pattern of reasoning exhibited by which one of the following arguments is most similar to that exhibited by the argument above? ["Some of the people who signed the petition were among the mayor's supporters. Yet the mayor denounced everyone who signed the petition. Hence the mayor denounced some of her own supporters.", 'Some of the people who worked on the failed project will be fired. Everyone in this department played an important part in that project. Ttherefore some people in this department will be fired.', 'All of the five original planners are responsible for this problem. Yet none of the original planners will admit responsibility for the problem. Thus some of the people responsible for the problem will not admit responsibility.', 'Some of the people polled live outside the city limits. However, no one who can vote in city elections lives outside the city. Ttherefore some of the people polled cannot vote in the upcoming city election.']