Which of the following is the fundamental operation performed by computers to carry out arithmetic computations in the ALU? 

Analysis of the OperationThe Arithmetic Logic Unit (ALU) is the "calculator" of the CPU. It does not understand numbers as humans do (decimal); instead, it operates at the most fundamental hardware level.Binary Foundation: Computers represent all data as electrical signals—either On (1) or Off (0).Logic Gates: The ALU is composed of millions of microscopic switches called Logic Gates (such as AND, OR, NOT, and XOR). By combining these gates, the ALU can perform complex tasks.Arithmetic via Logic: For example, an "Adder" circuit uses XOR and AND gates to perform binary addition. To the computer, adding $5 + 3$ is actually a series of logic gate flips: $0101$ (5) + $0011$ (3) = $1000$ (8).Why the other options are incorrect:A) Storing decimal values: Transistors act as binary switches (0 or 1), not as storage for base-10 decimal digits directly.C) Software only: Arithmetic is a hardware function. While software can handle complex math, the fundamental execution happens in the physical circuitry of the ALU.D) High-level instructions: The CPU does "run" these, but they must first be translated (compiled/interpreted) into machine code (binary) before the ALU can process them.