What capability allows smartphones to share their internet connection with other devices?

The capability that allows smartphones to share their internet connection with other devices is called tethering. This feature enables a smartphone to act as a mobile hotspot, allowing other devices such as laptops, tablets, or other smartphones to connect to its internet connection. Tethering can typically be done through various methods including USB, Bluetooth, or Wi-Fi, making it a versatile solution for accessing the internet on devices that may not have their own cellular data connectivity.

The other options pertain to different functionalities or security issues related to Bluetooth technology. BlueBorne refers to vulnerabilities that impact devices via Bluetooth, while bluejacking involves sending unsolicited messages to nearby Bluetooth-enabled devices without their owner's consent. Bluesnarfing is a method of unauthorized access to a Bluetooth-enabled device to steal information. None of these options relate to the act of sharing an internet connection in the way that tethering does.