Explanation:

The **Control Unit (CU)** is the component of the Central Processing Unit (CPU) responsible for fetching instructions, decoding them, and then executing them by generating control signals to other CPU parts and components. It orchestrates the entire command execution process. * **Option A (Arithmetic unit):** The Arithmetic Unit (AU) performs arithmetic operations (e.g., addition, subtraction) under the CU's direction. * **Option B (Logic unit):** The Logic Unit (LU) performs logical operations (e.g., AND, OR) and comparisons, also under the CU's direction. * **Option C (Control unit):** This is the correct answer. The CU is the primary component that executes commands by managing the instruction cycle. * **Option D (Both Arithmetic unit and Logic unit):** The ALU (Arithmetic Logic Unit, comprising AU and LU) performs computations, but the CU is what directs *which* computations to perform and thereby executes the overall command.