As B would certainly be an argument against the claim, it leaves us with a, c and d. In this case the answer would be A as C could be easilily coutered with any type of trait argument, such as "the person was born with a special trait to become a sport celebrity and achieve success was easy compared to many others". Option D could also be countered with the same argument. Option A leaves us with the cooperative and generous role model argument, which you could also enphasize by implying teachings from other famous faces such as Jesus (help your neighbour), Gandhi and etc.
I think Rapunzel would have thought you to never take anything for granted. She had been stuck in the castle for a very long time. She always kept hope because of the lights. She was also very grateful for everything her "mother" gave her. She was never rude to her mother because she was so grateful for everything. Because of this, and her kindness to all, she was able to get home safely.
