The main circuit board inside a computer is called the

• A. CPU
• B. GPU
• C. Motherboard
• D. Power supply

Answer: (C)

The central idea is recognizing the main circuit board that everything else connects to inside a computer. This board, called the motherboard, serves as the hub where the processor, memory, storage controllers, graphics, and other components attach and communicate. It houses the sockets and slots for these parts, and it contains the buses and regulators that let data and power flow between them. The CPU is a separate processing unit that plugs into the motherboard, not the board itself, and the GPU is either a separate card or integrated into the CPU or chipset—still connected to the motherboard. The power supply is a separate component that provides power to the motherboard and all other parts. So the motherboard is the main circuit board that ties everything together.