To only engage in sexual contact when using protection (:
Amongst the options given, the possible answer would be "that Sayuri's intelligence is way beyond her years". A critical person can arrive at this answer because the situation stated that Sayuri had habits that differ from other children. Those extraordinary habits can be connected to the child's intellectual level. Kids that are more intelligent than the others will tend to display habits that are out of the ordinary.
To be more specific, government does in fact play a major safety role in professional sports. Take for example, American Football. The government, through federal medical associations, will regulate and mandate that players wear proper protective gear to ensure minimal injury. The NFL, along with all other professional athletics, are medically regulated through the government. Hope this helped!