Nakisha and Samir are making an effective use of presentation skills. Both are defending their ideas and persuading the others to follow them, by showing their knowledge about the topic with examples, and making the other students agree with them by using their ideas as well.
Mark, Casey and Kara are not so effective as they are not approaching the conversation properly, paying close attention to the questions given, or defending their own opinion.
Nakisha mentions another student’s point of view to help explain her own perspective.
Samir brings notes to the meeting so he can persuade council members by supporting his opinions with facts.
Explanation:
These are the two options which are suitable examples of <u><em>using effective presentation skills, </em></u>because, you always have to do it in a respectful and empathic manner, this means: <u>no interrupting</u> (As Casey's example),<u> no ignoring</u> (as Kara's) but also, being empathic <em>doesn't mean</em> that you have to agree upon everything you're told, on the contrary, if you do not agree; respect and analize, and do what Nakisha; mention the other's point of view, so as to explain your own perspective.