Which technique should group members use to ensure that they cover important topics during a discussion?

D. Outlining a discussion plan.

Explanation:

Informal discussions tend to take a life of their own and require little planning. However, when a discussion is formally organized in order to deal with a particular topic, it can be useful to prepare beforehand with a discussion plan. Having a discussion plan will allow you to make sure that all the necessary topics are covered. It will also allow the group to stay on track and be more productive when it comes to reaching a positive outcome.

explanation:

the goblins and dwarves have different perspectives of things. bilbo is a hobbit and goblins dwarves and hobbits all believe and do a different way of living

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.