The correct answer is C. Spend a lot of time rehearsing and make notecards with all his main points that he can refer to during his speech
Step-by-step explanation:
Public speaking, also called oratory refers to the process of delivering a speech or presentation to an audience or group or listeners. Even though this process might seem a simple one it includes multiple elements and factors to consider including the speaker, the audience, the message, and the situation. In the case of the speaker, it is necessary for he or she to really know about the topic or message that is going to deliver for doing this it is recommended to study about the topic, rehearse and practice before the real presentation and rely on notecards, slides and other resources to remember the main ideas.
However, it is recommended to memorize the speech, read a lot during it or improvise as this usually leads to the speaker forget information or the audience not being engaged to the presentation. This means in case Chucks or any other person does not know very well about the topic he is presenting the best option is to study the topic so he can understand it better, practice the presentation (rehearse) and create some tool such as notecards to remember the information and avoid skipping main points during the presentation.