in the following conversation, which group discussion technique does han most clearly show? han: did you guys feel the article was biased? kim sato is a newscaster from japan. since newscasters get money and fame when they deliver a "big" story, i think it's possible that kim just wants to stir up controversy. a. assessing the claims of your discussion partner b. challenging established ideas c. using evidence to support your conclusions d. asking clarifying questions