A presenter was six, when the relationship between the number of sales and a company from one city to the next, which medium should the presenter used to present the data

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

It is difficult to determine the exact medium the presenter should use based solely on the information provided. The choice of medium would depend on various factors such as the purpose of the presentation, the target audience, and the nature of the data being presented.

If the data is complex and requires visual representation or demonstration, a combination of audio and video (option D) would be the most effective medium. This would allow the presenter to share visual graphs, charts, or maps along with relevant explanations.

If the data is relatively simple and can be effectively conveyed through spoken words, then audio (option A) alone could be sufficient. This could be in the form of a recorded presentation or a live speech with accompanying verbal descriptions.

If the data is primarily in text form and the audience is comfortable with reading and analyzing text, then traditional text (option C) could be used. This would involve presenting the data in a written format, such as reports, slides, or handouts.

However, since the question only states the age of the presenter (six years old) and does not provide any other relevant information, it is not possible to make a definitive recommendation.