North Americans who travel to Europe for the first time should include significant time in Italy on their itinerary. To develop an appreciation of a continent that goes beyond the mere accumulation of impressions, one needs to acquire a thorough knowledge of at least one country, and North Americans seem to find it easier to get to know Italy than other European countries. Which one of the following best illustrates the principle illustrated by the argument above? ['To overcome a fear of water that prevents one from swimming, one should paddle about in shallow water with a trusted friend who is a good swimmer.', 'One should travel through North America by train rather than by automobile, because train travel imparts the same sense of open space as does automobile travel, while also affording one the full leisure to attend to the scenery.', 'Edith Wharton is the most accessible of the classical U. S. writers. So in order to provide a superb introduction to U. S. literature, a class should emphasize her work while also studying the works of others.', 'One can appreciate Taiko-drumming only if one understands how physically demanding it is. Thus, one should see Taiko-drumming and not just hear it in order to appreciate it fully.']