The correct answer is A. CMOS.
CMOS (Complementary Metal Oxide Semiconductor) is a type of semiconductor technology that uses both n-type and p-type MOSFETs (metal-oxide-semiconductor field-effect transistors) to create logic gates and other digital circuits. CMOS is a very versatile technology that is used in a wide range of applications, including microprocessors, memory chips, and integrated circuits.
Logic gates are the basic building blocks of digital circuits. They are used to perform simple logical operations, such as AND, OR, and NOT. Logic gates can be combined to create more complex circuits, such as flip-flops and registers.
BIOS (Basic Input/Output System) is a firmware that is used to initialize and configure a computer’s hardware. It is also responsible for loading the operating system into memory. BIOS is stored on a chip on the motherboard.
DMOS (Double-Diffused Metal Oxide Semiconductor) is a type of semiconductor technology that is similar to CMOS. However, DMOS uses a different type of transistor, called a DMOSFET. DMOSFETs are more powerful than MOSFETs, but they are also more expensive.
None of the other options are correct.