语法高手请指教？？？

1、 In 1933 the rubber, clothing, and shipbuilding industries put into effect a six-hour workday, (believing it a seeming permanent accommodation rather than a temporary expedient for what many observers thought was)an economy made overproductive by advances in technology.
B  believing it a seeming permanent accommodation instead of a temporary expedient for what many observers thought was
C  believing that it was not a temporary expedient but a seeming permanent accommodation to what many observers thought of as a
D  not as a temporary expedient but as a seemingly permanent accommodation to what many observers thought was
E  not as a temporary expedient but believing it a seemingly permanent accommodation for what many observers thought
答案是D，我的问题是，D中的accommodation to what many observers thought was an economy made overproductive by advances in technology，因为是accommodation to,所以后面的成分都应该可以看作一个something，显然这个something就应该是what 引导的一个宾语从句，但是，最可怕的是，这个what 引导的的句子是一个主从复合句，不是一个从句。所以一定要说D对，我只能猜测ETS认为what many observers thought was中的many observers thought只是一个插入成分，句子主干其实是what was an economy made overproductive by advances in technology。但是，这种用法又好象很怪异，尽管似乎也有这种结构。是不是我理解错误，应该如何理解，请指教。
139. The extraordinary diary of William Lyon Mackenzie King, prime minister of Canada for over twenty years, revealed that this most bland and circumspect of men was a mystic guided in both public and private life by omens, messages received at seances, and signs from heaven.
A. that this most bland and circumspect of men was a mystic guided in both public and
B. that this most bland and circumspect of men was a mystic and also guided both in public as well as
C. this most bland and circumspect of men was a mystic and that he was guided in both public and
D. this most bland and circumspect of men was a mystic and that he was guided in both public as well as
E. this most bland and circumspect of men to have been a mystic and that he guided himself both in public as well as
答案是A，请问this most bland and circumspect of men 是个什么结构，怎么看着那么怪异，两个形容词并列修饰men,居然中间又夹杂了一个介词of, 实在是看不懂，请指教。