Based on the given dialogue above, the discussion technique that Daniel is clearly showing is challenging established ideas. The answer would be option A. What makes me say that this is challenging established ideas is that, the news presented above is already released in the media, and therefore, this makes the ideas established. Now, just according to Daniel's observation, he is trying to question the ideas that are given in the news. Hope this helps.
If the golden word would be distinguish, I'm pretty sure the answer is C. Hope this helped, have an awesome day
Its expository text because it is explaining him and what he has done. I hope this helps.:)
