BIOS Full Form Explained

The question asks for the correct expansion of the acronym BIOS.

BIOS is a fundamental piece of firmware stored on a computer's motherboard.

Analyzing BIOS Options

• Option 1: $Browser Input Operating System$ - Incorrect. Relates to web browsers, not system startup.
• Option 2: $Basic Input/Output System$ - Correct. Describes the function of the BIOS.
• Option 3: $Basic Input Operating System$ - Incorrect. Missing the crucial 'Output' component.
• Option 4: $Browser Input/Output System$ - Incorrect. Relates to browsers, not core system functions.

Conclusion

The Basic Input/Output System (BIOS) is responsible for initializing hardware components and starting the operating system when a computer is powered on. It performs the Power-On Self-Test (POST) and loads the bootloader.

Therefore, the correct full form of BIOS is Basic Input/Output System.