大家来看下这题应该选啥--求逻辑链

outsider0214

                                    Mayor: Migrating shorebirds stop at our beach just to feed on horseshoe-crab eggs, a phenomenon that attracts tourists. To bring more tourists, the town council plans to undertake a beach reclamation project to double the area available to crabs for nesting.Birdwatcher: Without a high density of crabs on a beach, migrating shorebirds will go hungry because shorebirds only eat eggs that a crab happens to uncover when it is digging its own nest.

Which of the following, if true, would provide the mayor with the strongest counter to the birdwatcher's objection?                                    
                                    

• AEvery year a certain percentage of crabs are caught by fishermen as bait for eel traps.
• BHorseshoe crabs are so prolific that given favorable circumstances their numbers increase rapidly.
• COn average, tourists who come to the town in order to watch birds spend more money there than tourists who come for other purposes.
• DThe additional land made available by the reclamation project will give migrating shorebirds more space.
• ESome of the migrating shorebirds make only one stop during their migration form South America to Canada.
  

欢迎大家来讨论下~~~~  此题看的我有些晕~~~  

xiqiong

lZ你看，他们俩的矛盾之处是什么呢？major说：要增加crab的产卵地增加某鸟觅食奇观。后者反驳说：鸟只有在crab密度大才能成功觅食。后者暗含什么呢？就是，产卵地增加但crab的数量不增加或增加得不够多导致密度下降。
加强major的建议就是要否定反驳者，即，crab是个很能繁殖的物种。有地就能繁殖。B不是正说明这个么呢^_^

outsider0214

是的呀，仔细读下，是把问题读成counter mayor了，仔细一定要仔细，谢谢xiqiong