一道疑难的完型题——有兴趣的进来做做

gubinlaile

There are many features that mark a movie as American , but perhaps the most essential is the theme of the loner-hero. (西部牛仔)In the western movie, which comes out of many legends of the American West, a typical figure is the lonesome cowboy. He wanders into a town and straighten out his trousers. Then the strong and independent hero rides off into the sunset alone. Americans like this image in their films because they are ___ independent, and individualism counts a great deal with them.
A、        fairly
B、        totally
C、        relatively
D、        highly
选A还是D呢？