Answer:
D. Increasingly outdated military technology
Step-by-step explanation:
Based on historical records, the option that best completes the diagram is "Increasingly outdated military technology."
This is because the Decline of the Ottoman Empire could be traced to various issues, among which is the increasingly outdated military technology.
The decline of the Ottoman Empire in terms of the military might was evident during the Balkan Wars which occurred between 1912 to 1913. At this point, the Ottoman Empire lost nearly all its European territories.