What are three characteristics of a good steering mark?

A good steering mark is characterized by distinct features, continuous visibility, and a height that ensures it stands out in the environment. Distinct features are essential because they allow navigators to recognize the mark quickly and reliably, reducing the chances of misidentification. Continuous visibility ensures that the mark can be seen over a distance or period of time, which is crucial for maintaining a clear line of navigation in changing terrains or conditions. The height of the mark is also important; it needs to be high enough to be seen above obstacles such as vegetation or buildings, ensuring that it won't be easily blocked or obscured during normal visibility conditions.

In contrast, the other options include characteristics that do not necessarily contribute to effective navigation. For example, a colorful display may catch attention, but it does not guarantee that the mark is recognizable at a distance. Being easily identifiable is a positive trait but may not hold as much significance if the mark lacks distinct features. Marks near water sources may be relevant in certain contexts but do not fundamentally contribute to their effectiveness as a steering mark. Concepts such as static position and minimal visibility contradict the very premise of what makes a steering mark useful. Similarly, the idea of obscurity or seasonal change runs counter to the goal of having a reliable navigation