The correct answer is B. Logos; D. Ethos and E. Pathos
Explanation:
Rhetoric refers to the process, strategies, and techniques used for persuasion, in this, the main appeals or strategies used are the logos, the ethos, and pathos. As rhetoric itself each of these appeals aims at persuading the audience although each has a different focus in the case of ethos this uses ethics or the credibility of the speaker, in the case of pathos this focuses on the emotions of the audience and finally in the case of logos this uses logical statements and facts. Therefore, the three elements of speech that refer to rhetorical appeal are logos, ethos, and pathos.
The benefit of group work that is demonstrated in this example is enabling a complex task be broken down to simpler and fewer works. Since each individual had been given fewer task, it leads to increase of productivity while saving the time consumed in finishing the project.