If you're looking for a certain portion of this excerpt that restates the main idea, I would have to say that the first few words explain it very well: "<span>I demand that my books be judged with utmost severity..." The writer of this statement is saying that they wish for their books to only be judged by those who are educated in grammar and logic. </span>
You can add re- to get redust which means to dust again
Your answer is option 2, they<span> believed in worshipping their ancestors.</span>
Imagery I think is the answer