The correct response is: Many Americans in rural areas felt that their way of life was being threatened.
During the 1920s, the rapid growth of immigrant populations in urban areas led to a cultural backlash among many Americans, especially those in rural areas. They felt that the influx of immigrants threatened their traditional values, social norms, and way of life. This sentiment contributed to a rise in nativism, xenophobia, and movements aimed at restricting immigration.