Final answer:
The guideline that is NOT considered effective for informative speaking is 'e. Using a single communication channel' as it limits the speaker's ability to connect with a broader audience. Effective informative speaking involves adapting to a diverse audience and utilizing multiple communication methods to ensure clarity and engagement.
Step-by-step explanation:
When guiding someone on effective informative speaking, one of the essential principles is to engage multiple communication channels to reach the audience effectively. Options like visual aids, infographics, and different adaptations for those with hearing or visual limitations enrich the presentation and make the information accessible to a wider audience. The incorrect guideline among the options provided, which is not considered an effective method for informative speaking, is e. Using a single communication channel. It restricts the speaker's ability to connect with a diverse audience, which contradicts the crucial principle of adapting to diverse listeners and providing clear, understandable, and memorable content.
To ensure that your communication is clear and engaging, remember to provide listeners with a clear thesis statement, motivate listeners to want information, adapt to diverse listeners, and organize the content so listeners can follow easily. These strategies are central to the success of informative speaking, while relying solely on a single communication channel is counterproductive.