Which type of positioning method chiefly relies on satellites for location information?

The correct answer is the Global Positioning System (GPS) because it is a satellite-based navigation system that provides location and time information to a GPS receiver anywhere on Earth, provided there is an unobstructed line of sight to at least four satellites. GPS relies on a network of satellites that orbit the Earth, transmitting signals that are used to triangulate a specific location. This method is highly accurate and widely used for various applications, such as navigation, mapping, and tracking.

In contrast, indoor positioning primarily utilizes local technologies like Wi-Fi, Bluetooth, or RFID signals to determine a device's location when GPS signals are unreliable, as they often are indoors. Coarse positioning usually refers to less precise methods that can include various technologies for estimating location, but it does not specifically rely on the satellite signals that GPS uses. Geo-tracking might employ GPS among other technologies, but it is a broader term that encompasses various methods for tracking the geographic location of an object or individual. Hence, among the options provided, GPS is the definitive method that relies chiefly on satellites for accurate location information.