A presenter wants to explain the relationship between the number of sales in a company from one city to the next. Which medium should the presenter use to present the data?

A. Audio
B. A combination of audio and video
C. video
D. Traditional Text

To explain the relationship between the number of sales in a company from one city to the next, the presenter would benefit most from using a visual aid to clearly demonstrate the differences or trends. Therefore, the best options would be:

B. A combination of audio and video
C. Video

However, a combination of audio and video (option B) is usually the most effective method, as the presenter can use a video presentation that includes charts, graphs, or maps to visually represent the sales data while also providing verbal explanations and context through audio. This approach helps to engage the audience and can make complex information more understandable.

Option C is also suitable but may rely solely on the video to explain the data, which might be less effective if the audience needs additional context or explanation provided through spoken words.

Option D, Traditional Text, can be useful as supplementary material but is less effective for explaining data relationships during a live presentation because it lacks the visual and auditory engagement that helps audiences understand complex information.

Option A, Audio alone, is the least effective for this purpose because it would not provide the needed visual context to understand the relationship in the data. With audio, the audience would have to visualize the data in their heads, which could lead to misunderstandings or a lack of clarity.