A. Operating system
B. Keyboard
C. Mouse
D. Hardware
🧠 Explanation:
A computer cannot boot without an operating system, which manages hardware. For tech students, this highlights computer functionality, making it a key topic for studying computer architecture, IT systems, and digital literacy. Operating systems drive computers. Understanding this ensures knowledge of system operations. It’s essential for analyzing computer systems, IT, and engineering. Studying operating systems offers insights into how computers start, crucial for computer science, IT, and engineering.