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When dealing with navigation on a NavMesh, ensuring that AI characters move smoothly across different areas is crucial for maintaining a natural-looking movement. Using "Auto Traverse Off-Mesh Links" is the feature specifically designed for this purpose.

Off-Mesh links are used to bridge gaps between different areas of a NavMesh that are not directly connected. These links allow for actions like jumping or climbing over barriers. By enabling the auto traverse option, the NavMesh system allows characters to automatically recognize and utilize these links, thereby facilitating a seamless transition between different terrains. This creates a more fluid movement experience as AI characters can navigate through various environments without interruption.

Other options do not contribute directly to the smooth connection of paths across different NavMesh areas. Manual NavMesh baking is related to the initial setup of the navigation mesh and does not affect dynamic movement through links. A dynamic path algorithm may enhance pathfinding efficiency but does not specifically address the connectivity between NavMesh areas. Adjustable Speed Variables control the speed of movement but do not influence path connectivity itself. Therefore, utilizing Auto Traverse Off-Mesh Links is the most effective approach for ensuring smooth transitions across different NavMesh areas.