Which hardware component stores instructions for critical system activities?

The central processing unit (CPU) is responsible for executing instructions, performing calculations, and coordinating the activities of other hardware components within a computer system. However, it does not store instructions for critical system activities; rather, it processes and executes instructions stored in memory.

The graphics processing unit (GPU) is specialized hardware designed to handle graphics-related tasks such as rendering images, videos, and animations. While GPUs play a vital role in enhancing visual performance, they do not store instructions for critical system activities like ROM does.

Random-access memory (RAM) is volatile memory used to temporarily store data and instructions that the CPU needs to access quickly during normal operation. However, RAM does not store permanent instructions for critical system activities; its contents are lost when the power is turned off.