What does the motherboard connect in a computer?

The motherboard is a crucial component of a computer, serving as the main circuit board that interconnects all the hardware components. It provides the necessary physical and electrical connections to enable communication between the CPU, memory, storage devices, input/output (I/O) devices, power supply, and other peripherals.

By serving as the backbone of the system, the motherboard allows for the coordination and transfer of data and power among all these components, ensuring that they function together seamlessly. This integration supports the overall performance and functionality of the computer system, which is why the correct answer highlights that the motherboard connects all major components, not just a select few.

The other options suggest limited connectivity, which does not accurately represent the full role of the motherboard in a computer.