Which method is utilized for determining direction on a map?

Utilizing a compass is an essential method for determining direction on a map because it allows you to find true north and establish your orientation relative to the terrain. A compass is designed to align with the Earth's magnetic field, providing accurate directional information that can be cross-referenced with the map's features. This is crucial for navigation, ensuring that the user can align the map correctly and take precise bearings to reach their destination.

In contrast, counting grid lines helps with estimating distances on a map, but it does not provide information about direction. Measuring with a scale also pertains to distance calculations rather than direction. Checking GPS coordinates can provide location information, but it doesn't rely on the map's features or help establish orientation with respect to the map itself. Therefore, using a compass remains the most reliable method for determining direction on a map.