Littoral Warfare focuses on which of the following?

Littoral Warfare emphasizes the strategic importance of coastal regions and focuses on the access and control of these areas. Littoral zones, which are the waters close to shore, require specialized tactics and capabilities due to their unique geographical challenges and the presence of both naval and land forces. The significance of littoral warfare lies in its direct impact on national security, enabling forces to project power, conduct operations, and control maritime routes in areas where land and sea interact.

This focus on coastal regions allows for operations that include amphibious assaults, surveillance, and maritime interdiction, all crucial for maintaining an advantage over adversaries in these sensitive areas. The other options—deep-sea exploration, space operations, and underwater mining—do not pertain to the strategic and operational objectives associated with littoral warfare.