Option C. One of the advantages that the Millet system had was that it helped to Reduced religious tension and violence between groups.
This is the term that is used to refer to the system of the Ottoman's that existed at the time. This system was known for the fact that it allowed for religious tolerance in the area. This was the way that the people were able to avoid the violence that came with having people of other religions living together.
The system was also known for giving the religious groups the autonomy that they needed in order to rule their own communities. Hence we can say that the advantages that the Millet system had was that it helped to Reduced religious tension and violence between groups.
Read more on the Millet system here: https://brainly.com/question/481341
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