The emperor advocated the expostulation _____calamities and reanimate officeholders to point out the officials faults used for reference for the frequency of natural disasters_____ Yuan Dynasty.

The emperor advocated the expostulation _calamities and reanimate officeholders to point out the officials faults used for reference for the frequency of natural disasters_ Yuan Dynasty.

on, in

about, in

at, at,

over, inside

The word "expostulation" refers to expressing strong disapproval or disagreement.

The correct prepositions are "about" (to express disapproval regarding something) and

"in" (indicating the time frame or period, such as during a specific dynasty).