What is the primary benefit of using the sun for navigation?

Using the sun for navigation relies on its consistent and predictable path across the sky, making it a reliable reference point during the day. The position of the sun changes throughout the day and is influenced by the Earth's rotation and its orbit around the sun, which allows navigators to determine directions based on its position relative to time. This reliability is especially useful in outdoor navigation where man-made markers may not be present.

The other options do not capture the primary benefit as effectively. While it is true that adjustments can be made based on the sun's movement, the focus on reliability as a constant reference underpins why it is favored for navigation. The sun indeed provides information, such as time of day and directional cues, but not all necessary information in every context. Although some navigation methods can be tool-free, relying solely on the sun does require knowledge of solar patterns and possibly some means for tracking time to be effective, making tool-less navigation not the central advantage.