Final answer:
Charlemagne accomplished all of the mentioned achievements so the correct option is D.
Step-by-step explanation:
The correct answer is D) Charlemagne accomplished all of the above. Charlemagne was indeed accomplished in all of the mentioned areas. He promoted learning by reviving interest in ancient writings, sponsoring education, and the creation of libraries. He was devoted to the work of the Christian Church by reorganizing the Church and insisting on a strict hierarchy.
Moreover, Charlemagne brought order to his empire by reorganizing the government, establishing counties and marches to govern the land, and protecting the borders. Therefore, all of the given options are achievements of Charlemagne.