Final answer:
To do online shopping, a home user needs to access the Internet, which is a global network providing various services including e-commerce.
Step-by-step explanation:
To do online shopping, a home user must access the Internet. The Internet is a global network that provides various services, including online shopping, information access, and communication. Other options like Near Field Communication (NFC), Bluetooth, and a local area network (LAN) serve different purposes and are not primarily used for online shopping. NFC is commonly used for contactless payment transactions and data exchange over short distances. Bluetooth is typically used for connecting devices over short distances to exchange data or connect accessory devices. A LAN is a network that connects devices in close proximity, such as within a home or office, and while it can provide access to the Internet, it is not itself the network used for online shopping.