What type of wireless network device forms a personal area network (PAN) for hands-free communication?

Bluetooth is the correct choice for forming a personal area network (PAN) specifically designed for hands-free communication. This technology allows devices that are in close proximity, typically within a range of about 10 meters, to connect and communicate wirelessly. Bluetooth is widely used in hands-free devices such as headsets, car systems, and personal gadgets, facilitating seamless audio communication without the need for physical connections.

While Wi-Fi is another type of wireless communication technology, it generally supports larger area networks, such as local area networks (LANs) in homes or businesses, and is not typically classified as a personal area network suitable for hands-free devices. Ethernet, on the other hand, is a wired technology that does not support wireless connections at all, focusing instead on physical network structures. Cellular networks provide broader coverage for mobile devices but are typically not associated with the close-range connections required for a personal area network.