Final answer:
3) A docking station allows a laptop or tablet to function like a desktop unit by providing additional ports and connections. Hence, option 3) is correct.
Step-by-step explanation:
A docking station allows a laptop or tablet to function like a desktop unit. It provides additional ports and connections, such as USB ports, display outputs, and ethernet ports, that a laptop or tablet may not have built-in.
When the laptop or tablet is connected to the docking station, it can easily connect to peripherals like monitors, keyboards, mice, printers, and networks. This enhances productivity and convenience by allowing the device to be used in a more traditional desktop setup.