19.  Parents often faced the ______ between doing what they felt was good for the development of the child and what they could stand by way of undisciplined noise and destructiveness.
【正确答案】 B
【答案解析】 B选项dilemma意为“困境，进退两难”。根据句意：“父母们经常面对这样的两难处境，是选择做他们认为对孩子发展好的事情，还是选择对其吵闹和破坏放任自流”，故选B。
   其他三项中，A选项paradox：自相矛盾；C选项junction：连接，接合，会合点；D选项premise：前提，假定，都不符合句意。