请问OG 93

93.It is well known in the supermarket industry that how items are placed on shelves and the frequency of inventory turnovers can be crucial to prifits.

E.how frequently the inventory turns over can be

在所有答案中我知道选E

但如果有一个答案是:how freauently the inventory is turned over can be

难道这里不应该是被动语态吗?

请教NN

OG 说B,C的 is often错误是因为 does not agree with the plural compound subject

请问 are often的话 are对应的是什么复数名词呀？

This parallelism is preferable to the use of the noun phrase the frequency in A, B, and C. Furthermore, the frequency of inventory turnovers in A and B is less clear than how frequently the inventory turns over

为什么前面说preferable?后面又说is less clear?

不好意思,斑竹,糊涂了,看错了,请帮我把上面的删掉一下!