What type of reconnaissance mission focuses specifically on a particular route?

The correct choice is route reconnaissance because this type of mission is specifically aimed at gathering information about a designated route. Unlike area reconnaissance, which seeks to obtain information about a larger sector or space, or zone reconnaissance, which covers a broader geographical area, route reconnaissance narrows its focus to the specifics of a path that forces may need to travel. This includes details like the terrain, obstacles, enemy presence, and potential ambush sites along the route, making it crucial for planning movement and ensuring safety. Aerial reconnaissance can complement route reconnaissance but does not concentrate exclusively on a single path.