Start by naming the pattern in the given argument: it is a "general claim plus one supporting example" argument. The claim is that nature lovers are drawn to parks, and the sole support offered is footfall data from one specific park, Corbett. No attempt is made to rule out other reasons people might visit (crowds, school trips, curiosity). We need the option built the same way.
Only option C keeps the same two-part structure, general claim first, then a single anecdotal case cited as evidence, so it is the closest match.
Let's summarize:
The answer is option C.