문제 내용: 글의 흐름상 가장 어색한 문장은?
선택지 1: Children's playgrounds throughout history were the wilderness, fields, streams, and hills of the country and the roads, streets, and vacant places of villages, towns, and cities.
선택지 2: Only during the past few decades have children vacated these natural playgrounds for their growing love affair with video games, texting, and social networking.
선택지 3: Even in rural America few children are still roaming in a free-ranging manner, unaccompanied by adults.
선택지 4: When out of school, they are commonly found in neighborhoods digging in sand, building forts, playing traditional games, climbing, or playing ball games. They are rapidly disappearing from the natural terrain of creeks, hills, and fields, and like their urban counterparts, are turning to their indoor, sedentary cyber toys for entertainment.