Which device provides a connection between a local area network and the Internet?

The correct choice is a gateway because this device acts as a critical bridge between a local area network (LAN) and the Internet. Gateways convert and route traffic between different networks that may use different protocols and architectures, allowing communication and data exchange between devices on the LAN and external networks, including the Internet.

This functionality is essential for enabling Internet access from local devices, and it typically involves processing packets for transport across these varying networks.

While other devices like routers also facilitate connection to the Internet, their primary function is to direct traffic between subnets and manage data routing rather than transforming or converting data protocols. Hubs and switches primarily serve to connect devices within the same local area network, directing traffic between local devices, but they do not inherently connect to the Internet or provide inter-network communication capabilities. In contrast, a gateway is specifically designed for this purpose, making it the most suitable answer.