When listening to an informative speech by one of yourclassmates you realize tha

When listening to an informative speech by one of yourclassmates you realize that much of it is plagiarized from amagazine article you read a couple weeks earlier. What do you do?Do you say something when your instructor asks for comments aboutthe speech? Do you mention your concerns to the instructor of theclass? Do you talk with the speaker? Do you remain silent?