Final answer:
Infographics are the best mode for a quickly understood visual representation of content and are known for combining textual and graphic elements to convey information effectively.
Step-by-step explanation:
The mode that is BEST identified as a quickly understood and clear visual representation of content, which includes diagrams, timelines, flowcharts, maps, word clouds, graphs, and tables, is B. infographic. Infographics are multimodal texts that combine words and various types of graphics to present information succinctly and engagingly. Unlike a podcast, which relies on audio, or a documentary, which is usually a longer form video highlighting a particular subject with audio-visual elements, an infographic is designed for immediate visual impact and ease of understanding. PowerPoint or Prezi presentations can include infographic elements but are broader in their application for creating presentations with a sequence of slides.
Moreover, considering the use of infographics in different settings can enhance the accessibility and effectiveness of communication. Whether it is integrating multimedia content like infographics in a speech or considering a visual mode for data representation within a report, infographics serve as a powerful tool. They can make complex data and information more digestible while also capturing the attention of the audience with their visual appeal.