题目内容：
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。Sport or Spectacle? Muhammad Ali is probably the most famous sports figure on earth: he is recognized on ever3r. continent and by all generations. The____ (51) of his illness as Parkinson's disease after his retirement fuelled the debate about the dangers of boxing and criticism (52) the sport. That, plus his outspoken opposition (53) women's boxing, made people wonder how he would react when one of his daughters decided to _ (54). up the sport. His presence at Laila's first professional fight, however, seemed to broadcast a father's support. Of course Muhammad Ali wanted to (55) his daughter fight. The ring announcer introduced him as the "the greatest" and as he sat down at the ringside the crowd chanted.
Twenty-one-year-old Laila's debut.fight（首次亮相） was a huge success and there was as much publicity for the __ (56) as her father's fights once attracted Laila's opponent was much weaker than she was and the fight lasted just 31 seconds. Since then, Laila has won most of her fights by knocking out her opponent “She knows (58) she's doing," said one referee about her. "She knows about moving well. You can see some of her dad's moves.
Laila Ali would rather not(59) herself to her father. She prefers to make (60). Her father supports her decision to enter the sport but he has not spared her the details of what can happen. Laila to understand the worst possible scenario（局面） to see (61) that her father wants her (62) she st川 wants to go forward with it. She knows she's going to get hit hard at times, that she may get a broken nose or a swollen(肿 P胀的) face, but at least she is prepared for it.
Laila's decision to start boxing despite her father's (63) with the symptoms of Parkinson's disease has of course sparked a mixture of praise and_ (64).But Laila is a determined indMdual and it is her famous last name that has made her a magnet for worldwide media attention, Of course, the(65) on the boxing scene of a woman with her family history attracts even more questions about whether women's boxing is sport or spectacle.
请在（51）处填上最佳答案。
A. discovery
B. recovery
C. prevention
D. diagnosis
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