求助两道OG11语法题

OG11第7题

carnivorous mammals can endure what would otherwise be lethal levels of body heat ecause they have a heatexchange network which kept the brain from getting too hot

a: which kept

b: that keeps

c:whic hs kept

d: that has been keeping

e:having kept

我对选项没问题。但是其中对选项c的解释说:which incorrecty introduces a restrictive clause.我不是很理解。请问Which可以引导限制性定语从句吗？我怎么记得可以阿

OG 11 NO. 8

Rising inventories, when unaccompanied correspondingly by increases in saes, can lead to production cutbacks tat would hamper economic growth.

a: wen unaccompanied correspondingly by increases in sae, can lead

b: when not accompanied by corresponding increases in saes, possibly leads

c: when they were unaccompanied by corresponding sales increases, can lead

d: if not accompanied by correspondingly increased sales, possibly leads

e: if not accompanied by corresponding increases in sales, can lead

我对选项没有问题。其中一个d选项的解释：verb （leads） does not agree with the subject (inventories)

请问这句话的主语是inventories还是rising inventories阿？

谢谢解答！！！

which 应该不可以引导限制性定从八。。。记得貌似只有that可以诶

，which这是典型的非限制性定从，如果没有逗号的情况直接跟which好像是有问题的，具体我也不清楚了

第二个主语应该是Inventories，rising是修饰inventories的