Which technology primarily allows wireless connectivity to the Internet?

WiFi technology is primarily designed to provide wireless connectivity to the Internet. It uses radio waves to transmit data between devices and a router, allowing devices like smartphones, laptops, and tablets to connect to the Internet without the need for physical cables. This capability makes it highly convenient and widely used in homes, offices, and public spaces, enabling users to access the Internet freely and easily within the range of the WiFi signal.

In contrast, Bluetooth is mainly used for short-range communication between devices, such as connecting headphones to smartphones, and is not typically used for Internet access. Ethernet refers to a wired networking technology that connects devices through cables, providing stable and high-speed Internet access but lacking the mobility offered by wireless solutions. Fiber optics involve using light to transmit data at high speeds over long distances, but this technology is typically used for backbone infrastructure rather than for providing direct wireless access to the Internet. Thus, WiFi is the clear choice when it comes to enabling wireless connectivity.