我一開始也選C,不過覺得C的答案提到向different host species學習應該不對!因為題目一直強調的是size而不是different species, same species can have different size of eggs. 所以A有提到size是怎麼決定來的才是它的conclusion!
我想应该是这样的 If too few eggs were laid, portions of the host egg would decay, killing the wasp larvae. 上面这个条件决定了下蛋,有个最小数,小于这个数,蛋就会死掉 If they laid too many eggs in a host egg, the developing wasp larvae would compete with each other to the death for nutrients and space 上面这个条件决定了,这个最小数的蛋需要一定的营养和空间,决定了最小的寄生蛋 这个要是考试的时候想的出来,我就是神了