The correct answer is D. maintains/includes.
North Korea is a totalitarian state that maintains a vast network of concentration camps. The camps are used to imprison political dissidents, religious minorities, and other groups that the government deems to be a threat. The conditions in the camps are horrific, and prisoners are subjected to torture, forced labor, and starvation.
The camps have been in existence for decades, and the government has shown no signs of closing them down. In fact, the government has recently increased the number of people being sent to the camps.
The camps are a major human rights violation, and the international community has condemned the North Korean government for its actions. However, the government has so far refused to take any steps to improve the situation in the camps.
The other options are incorrect because they do not accurately reflect the current situation in North Korea. Option A, “was maintaining/has included,” is incorrect because the camps are still in existence. Option B, “had maintained/would include,” is incorrect because the camps are not a future possibility. Option C, “is maintaining/had included,” is incorrect because the camps are not a historical relic. Option E, “maintained/will include,” is incorrect because the camps are not a hypothetical situation.