请问一题PP语法

sihua

47. _________ industries, inventions, and communal

   endeavors of the Shakers, the best known is

   their fine furniture.

                Of the many  

                Their many  

                Are the many  

                Many of the  

why A??

zhoushao

OF.....后是介词短语提前,这句子看成the best known OF THE MANY industries, inventions, and communal  endeavors of the Shakers  is  their fine furniture.前有the best 后面算是比较的范围