What is a good example of a "steering mark"?

A steering mark is an object or landmark that is used as a guide for navigation, particularly in outdoor environments or while sailing. Choosing a lone tree as a steering mark makes sense because it stands out in natural surroundings, thereby helping navigators maintain a course or direction. The visibility and prominence of a single tree can provide a clear reference point, making it easier for individuals to orient themselves and make navigational decisions.

Other options, such as a lone wolf, lone team member, or lone building, do not effectively serve the purpose of guiding navigation. A wolf is an animal and lacks the stationary presence needed for a navigation mark. Similarly, a team member is not a fixed point in the environment and would not be suitable for navigation. While a lone building could potentially serve as a landmark, it is generally less effective in natural or rural environments compared to something like a tree, which naturally integrates with navigational practices.