A computer's BIOS is defined as the

a. license that operates hardware

b. instructions within hardware

c. software within hardware

d. application software for hardware

c. software within hardware

Explanation:

The BIOS stands for a basic input/output system and is special system software that interfaces with all the main hardware of the PC with the OS. And it is generally stored in the flash memory chip which can be found on the motherboard, though sometimes the chip can be a kind of ROM. And when we turn on the computer, the BIOS does various important things. And it is not an application software for hardware. It is a system software.