The correct answer is A: Communication using digital voice or data systems via the internet. A digital mode hot spot (like a DMR, D-STAR, or System Fusion hot spot) is used with a transceiver to provide communication using digital voice or data systems via the internet. The hot spot acts as a bridge between your local radio and internet-connected digital networks. Hot spots are small devices that connect to the internet and allow you to access digital repeater networks (like DMR talkgroups, D-STAR reflectors, etc.) using a low-power transceiver. Instead of needing to be within range of a physical repeater, you use the hot spot to connect your radio to internet-based digital networks. This allows you to communicate with operators worldwide through the internet connection, even if you're using a handheld radio at home.