Final answer:
In the Korean demilitarized zone (DMZ), there is a military presence from both North and South Korea, as well as United Nations forces, primarily from the United States, to prevent hostilities. Hence, the correct answer is option C.
Step-by-step explanation:
Within the demilitarized zone (DMZ) in Korea, you would see a North and South Korean military presence. Despite its name, the DMZ is not completely free of military activity; rather, it serves as a buffer zone between the two Koreas. United Nations forces, primarily from the United States, patrol South Korea's side of the DMZ to discourage North Korean aggression.
The Korean War led to the creation of the DMZ, established by the 1953 Korean Armistice Agreement. This zone is intended to prevent the recurrence of hostilities and is considered the most heavily militarized border in the world. Although the DMZ was designed to be a buffer without any military personnel, in practice, it is monitored by both North and South Korean troops, and 28,500 US troops are stationed near the capital of Seoul.