Which of the following best summarizes the association between European monarchies and the dissemination of communication during the Middle Ages?

The answer is "Option B"

Explanation:

The missing choices are defined in the attached file please find it.

In the given question only choice b is correct because as knowledge discloses quicker, monarchs found it impossible to sustain a media network, and the wrong choice can be defined as follows:  

In option A, It is wrong because Monarchs are not earned from the low literacy levels, and it can't enable the political discourse to manage easily.  In option C, It did not face trouble in talking, and all journals belonged to the Christian religion, that's why it is wrong.  In option D, They believed it wouldn't enforce the fundamental right of its kings, which encourages people to read, that's why it is incorrect.