In this conversation, which group discussion technique does Anna most clearly show? JENNIFER: So, tell me about what you thought when he opened the door for the first time? DANIEL: That was a weird moment. Why open a door when you know you won't like what's on the other side? ANNA: I get that. But people are curious. They need to know. For me, that was the point. He had to know what was on the other side, even if it terrified him. It was all part of the symbolism. A. Identifying bias B. Using evidence to support opinions C. Outlining a discussion plan D. Challenging ideas

A discussion is a communicative situation in which two or more people share their ideas or debate about some specific situation, topic or material in order to analyze some situation or take some decision. Additionally, for discussions to be effective and accomplish its main purpose there are multiple techniques that can be used the participants or the leader of the discussion to keep everyone sharing their ideas or debating.

In the case of challenging ideas, this discussion technique is about discussing or reconsidering the assumptions made about the topic being discussed that had been accepted as true, but which might not be accurate. This means the basis of challenging ideas is to reconsider and discuss the ideas assumed to generate new ideas and introduce new perspectives. This type of technique can be seen in the discussion presented as Daniel has assumed the character had a weird behavior but Anna is questioning this idea and introducing new concepts such as "curious" or "symbolism" that completely question the assumptions of Daniel's idea and introduce a new perspective. Thus, the discussion technique that Anna uses is challenging ideas.