OG12-SC46题有疑问。请高手指教

46.In ancient Thailand，much of the local artisans' creative energy was expended for the creation ofBuddha images and when thev constructed and decorated the temples that enshrined them。



(A)much of the local artisans' creative energy was expended for the creation of Buddha images and when they constructed and decorated the temples that enshrined them



(B)much of the local artisans' creative energy was expended on the creation of Buddha images and on construction and decoration of the temples in which they were enshrined


(C)much of the local artisans' creative energy was expended on the creation of Buddha images as well as constructing and decoration of the temples in which they were enshrined


(D)creating images of Buddha accounted for much of the local artisans' creative energy， and also constructing and decorating the temples enshrining them


(E)the creation of Buddha images accounted for much of the local artisans' creative energy as well as construction and decoration of the temples that enshrined them

答案是B，只是我想请问一下，B选项里，they指代的是BUDDBA IMAGES, 可是 sth of n的形式里，n不是不可以被指代吗？
请高手解答一下。

46.In ancient Thailand，much of the local artisans' creative energy was expended for the creation ofBuddha images and when thev constructed and decorated the temples that enshrined them。
(A)much of the local artisans' creative energy was expended for the creation of Buddha images and when they constructed and decorated the temples that enshrined them
(B)much of the local artisans' creative energy was expended on the creation of Buddha images and on construction and decoration of the temples in which they were enshrined

继续提问：
B选项答案中说：The "and also" phrase is awkwardly set apart from the main claim of the sentence—
which is that all three tasks consumed much of the artisans' energy.
这里只是说了一个and also割裂了句子吧，and also 本身是没有错误的吧？
谢谢各位NN