Read this excerpt from alan weisman's "the city without us": the mature beech-oak-ash-ailanthus forest will be mowed down [by glaciers]. the four giant mounds of entombed garbage at the fresh kills landfill on staten island will be flattened, their vast accumulation of stubborn pvc plastic and of one of the most durable human creations of all—glass—ground to powder. which claim does the excerpt most clearly support? a. nature acts swiftly to reclaim abandoned urban areas. b. without humanity's presence, new york city would quickly deteriorate. c. nature is ultimately more powerful than humans. d. the human impact on the environment is permanent.