Winning the lottery can tend to ruin many people’s life’s. So I would advice my teacher to be careful with the money and who she tells. Other than that I believe she should spoil herself as she deserves it. Or maybe make a fund for her child’s college. As long as my teacher is humble and careful she should spend her money however she wishes!
In this case, there are no personal experiences stated. There are also no interviews with marine biologists about the future of coral reefs. So, the answer is, indeed, B.