Final answer:
In a physical star topology, a central device such as a hub, switch, or router is used to interconnect computers in a LAN.
Step-by-step explanation:
The physical star topology in a Local Area Network (LAN) uses a central device to interconnect computers. This central device can be a hub, switch, or router, which manages the data traffic within the network. Each computer or node on the network has a dedicated cable that connects to the central device, enabling communication with the other nodes. The correct answer is e. Central device.