Final answer:
The wireless WAN technology that is not suitable for voice applications due to high latency is Satellite. Satellite communication's long transmission distances introduce delays that can harm voice call quality, unlike Wi-Fi, LTE, and Bluetooth, which offer lower latency.
Step-by-step explanation:
The wireless WAN technology that might not be suitable for voice applications because of latency is c) Satellite. Satellite communication involves transmitting signals to and from satellites orbiting the Earth. This results in a longer transmission distance compared to terrestrial networks, which introduces higher latency. This higher latency can negatively affect real-time voice communications, leading to delays and decreased call quality.
Wi-Fi and LTE are generally more suitable for voice applications as they offer lower latency. Bluetooth, while not traditionally thought of as a WAN technology, also has lower latency but is more common for short-range device connections and isn't ideally used for wide-area voice communication.