What is the primary function of a router?

The primary function of a router is to route data packets between different networks. This involves receiving data from one network and determining the best path for that data to reach its intended destination, which may be on a different network. Routers play a crucial role in connecting different network segments, ensuring that data can flow between them efficiently and accurately.

In doing so, routers use various protocols and algorithms to analyze the data packets' destination addresses. They maintain routing tables that contain information about the best paths to various networks. As a result, routers facilitate communication across the internet and are essential for enabling multiple devices to connect and share information.

While the other options provided touch on functionalities related to networking, they do not encompass the primary role of a router. For instance, while a router can provide Wi-Fi access when combined with wireless technology, its core function remains focused on routing data. Additionally, storing data is typically a function associated with storage devices, and managing user accounts is relevant to network administration but is not a primary function of routers. Thus, the correct answer highlights the essential role routers play in network communications.