The correct answer is: A. a keen contest.
A keen contest is a close and exciting competition. In the context of the question, the cricket match proved to be a big draw because it was a close and exciting game that people wanted to watch.
The other options are incorrect because they do not accurately describe the cricket match. Option B, a huge attraction, is incorrect because the question does not state that the cricket match was a large event. Option C, a lovely spectacle, is incorrect because the question does not state that the cricket match was a beautiful or impressive event. Option D, a game without any result, is incorrect because the question does not state that the cricket match was a tie or a draw.