Which fleet is involved in operations in the Pacific Ocean?

The Pacific Fleet is the correct choice because it is specifically tasked with operations in the Pacific Ocean. This fleet is responsible for maintaining a significant naval presence, ensuring maritime security, conducting joint operations with allied forces, and responding to regional conflicts and crises in the Pacific area.

The Pacific Fleet operates from bases that are strategically located across the Pacific, allowing for rapid deployment of naval forces in response to a range of missions, including humanitarian assistance, disaster relief, and combat operations. This specialization enhances the fleet's ability to ensure stability and respond to threats in this vital region.

In contrast, the other fleets have distinct geographic mandates. The Northern Fleet operates primarily in the Arctic regions, focusing on the defense and security of northern maritime interests. The Southern Fleet is aligned with operations in the southern parts of the world, especially in the Indian Ocean and surrounding areas. The Baltic Fleet, on the other hand, conducts operations in the Baltic Sea and is primarily concerned with the defense of Northern European waters. Each fleet serves a unique strategic purpose based on their respective operational theaters, making the Pacific Fleet the unequivocal answer for operations in the Pacific Ocean.