I think the most important thing to remember here is the structure of a thesis statement.
Main idea- point- point- point. Each point represents like a paragraph of details.
Also, the question stated that it was what you thought was the best sport, and explain the reasons.
I wouldn't say "A". It doesn't have points. It's more of an opinion. It's better than any other sport. (superior) It's a statement, more than a thesis.
"B" and "D" aren't about sports. A specific one was never mentioned.
"C" is the best answer. The prompt asked what you thought was the best sport. If he said 'personally' or 'I think' that's fine. Plus, he had three good points in his thesis. Main idea: I think football is the best sport ever. Points: 'it is fun' 'you work as a team' and 'there's nothing more exciting than scoring the winning goal.'
