Which words in the sentence are the complete adjective clause? At the orchestra concert, my sister, who plays the flute, held a note for a long time. A. held a note for a long time B. for a long time C. who plays the flute D. at the orchestra concert\
At the orchestra concert, my sister, who plays the flute, held a note for a long time. This is who plays the flue because it is a adverb clause. "Plays the flute" and "who" make it a adverb clause.
