To determine the opinion of a speaker in a collaborative discussion, you would primarily analyze their claim. The claim reflects the speaker's stance or viewpoint on the topic being discussed. However, it's also important to consider their reasons and evidence, as these components support and elaborate on their claim, providing a fuller understanding of their opinion. Additionally, their reflections may reveal their thought process and how they view the topic in relation to others' opinions.
In summary, while the claim is central to identifying their opinion, evaluating the reasons, evidence, and reflections adds depth to your understanding of their perspective.