A parallel sentence mentions the same grammatical expression twice. I would go with "D". 'Passed' and 'Demonstrated' are both past tense words that express the same past tense grammatical idea.
If you have more questions, feel free to ask me.
A graph that shows the most-watched
sports around the world would be the best to enhance a speech about the
popularity of sports around the world.
To add, a visual aid is <span>an item of illustrative matter, such as a film,
slide, or model, designed to supplement written or spoken information so that
it can be understood more easily.</span>
<em>terms that are specialized to a particular content or topic.</em>
