While other writers from his time have faded into obscurity, Thoreau has endured for all these reasons but_____________________.

A、Somuchofwhathewroteaboutisstillrelevanttoday.;
B、Hismajorwork,Walden,isatranscendentalistwork.;
C、Hiswritingsongovernmentwererevolutionary,withsomecallinghimanearlyanarchist.;
D、Thoreau'sstudiesofnaturewereequallyradicalintheirownway,earninghimthemonikerof