蓝皮52页18题，请指教！

At the time of the Mexican agrarian revolution, the most radical faction, that of Zapata and his followers, proposed a return to communal ownership of land, to what had been a pre-columbian form of ownershio respected by the Spaniards.

A land, to what had been a pre-Columbian form of ownershio respected by the Spaniards.

B land, a form of ownership of the pre-Columbians and respected by the Spaniards.

C land, respected by the Spaniards and a pre-Columbian form of ownership.

D land in which a pre-Columbian form of wonershio was respected by the Spaniards

E land that had been a pre-Columbian  form of ownership respected by the Spaniards.

答案A，能不能帮我分析一下其他答案为什么错，还有A里to what看起来好像很便扭

B和C错误类似,respected 与a form 不平行

E里that从句修饰land，就是说land是一种form，逻辑不合理

D里in which修饰land也不合适。

主从句重要性不能改。原题中的respected 只用来作为一个修饰成分，可以看做是一个孩子，而前面的form of ownership才是主体，注意二者不能并列，所以B错。C同理错，而且由and的连接的成分必须得是形式功能都得平行的。D就更错了，都把respect用作大谓语了，身份变了，要注意，respect只是从句的一个修饰。E选项中，that只能修饰前面的land,从逻辑上来看，土地是形式错。根据排除法，选A.