再问伴随状语和and的逻辑意思区别。大全96

96 Although the bite of brown recluse spiders are rarely fatal,they cause chronic flesh wounds,posing the greatest danger to the infant and elderly,who are particularly vulnerable to its poison.

C the brown recluse spider is rarely fatal,it causes chronic flesh wounds,posing the greatest danger to the infant and elderly, who are particularly vulnerable to their

D the brown recluse spider is rarely fatal,it causes chronic flesh wounds and poses the freatest danger to infants and the elderly, who are particularly vulnerable to its

我知道C中的their宣告了C答案必须被枪毙，因为指代不一直。偶想问的是，如果不考虑这个因素，那么posing 和and pose在句子的意思上有什么不一样么？也就是动作之间的逻辑关系。

还有，the infant是不能指一类事物，而infants可以。所以，D中的答案infants和the elderly正好可以对应。是这样的么？？

望NN指点

Eureka~~