Answer:
The authors use rhetorical devices to increase the credibility of the essay. This is the most correct answer of all those mentioned because it directly corresponds to ethos, the rhetorical appeal to credibility.
Group discussions can also be categorized based on the topic allotted for the discussion to the participants. There are three kinds of topics-controversial topics, abstract topics and case study topics.
hope this helps ^^
What are the elements of drama?
Ergonomic
Non-toxic
Eco-friendly plastic