The best reason for a writer to include a video on a scientific website is to show movement or activity, as stated in option A and explained below.
By including a video, the writer of a scientific website can better show movement or activity. Describing movement or activity in words is possible, but can be quite difficult and even confusing. By using a video, the audience will be able to visualize what would otherwise have to be described.
With the information above in mind, we can choose option A as the correct answer.
Learn more about videos here:
https://brainly.com/question/12690189
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