C). He can refer to specific sources he used when conducting his research.
E). He can ask rhetorical questions to create a dramatic and engaging effect.
Explanation:
An organized or systematic structure of any essay, speech, or presentation is the key to ensure its effective delivery to the audience and help evoke the desired response from them.
As per the question, Kaveh is required to 'refer to limited(particular) sources while conducting his research' as it would help her focus on specific points and organize them constructively instead of using a huge range of sources which would not only affect the credibility of the claims(in the presentation) but also becomes unmanageable to be arranged rationally and systematically in the presentation. While 'asking the rhetorical questions to establish a dramatic and captivating effect' that would make it convenient to persuade the readers by creating the desired impact on them. Thus, <u>options C and E</u> are the correct answers.