What is the primary purpose of Tethering?

The primary purpose of tethering is to enable a device with internet access to share its connection with another device. This typically involves using a smartphone or mobile device as a hotspot, allowing other devices—such as laptops or tablets—to connect to the internet through the mobile device's cellular data. Tethering is especially useful in situations where a traditional Wi-Fi connection is unavailable, providing users with flexibility and connectivity on the go.

While other options mention aspects of data management and internet enhancements, they do not accurately describe tethering's core functionality, which is about sharing an internet connection rather than storing data, speeding up connections, or establishing a permanent internet infrastructure.