Read the introductory paragraph and pick the best thesis statement from the choices given below. : In many countries, families may live in the same geographic region for generation after generation, preserving the structure of traditional family life. This is not so in the United States. From the beginning, Americans were always on the move; they were adventurers, immigrants, and settlers of the West. In the twentieth century, easy access to automobiles contributed to an even greater mobility. In the years since the end of the Second World War, record numbers of young Americans have left their hometowns and driven all over the United States to find employment and create a better future for themselves. But all this freedom of movement has come at a price, as the young and old members of families no longer live int he same communities.