Which of the following is a responsibility of the National Park Service?

The responsibility of the National Park Service includes providing law enforcement services, which plays a critical role in safeguarding both the parks and the visitors who come to enjoy them. This encompasses enforcing regulations that protect the natural environment, wildlife, and historical sites within national parks. Law enforcement authorities within the National Park Service ensure that public safety is maintained, rules are followed, and that there are responses to emergencies and incidents that may occur in these protected areas.

While the organization is involved in activities related to public trails and parks, organizing these areas falls more broadly under park management rather than a specific responsibility in the same vein as law enforcement. Furthermore, military operations and the specific protection of marine life are not primary duties of the National Park Service. Instead, their focus remains on the preservation of natural and cultural resources, as well as ensuring the safety and enjoyment of the public in the park environments they oversee.