The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations and a control unit that orchestrates the fetching (from memory) and execution of instructions by directing the coordinated operations of the ALU, registers and other components.

Answer this question based on the passage: the core of the processor is composed of the alu and? OK. Let's think. My stream of consciousness:
This is the relevant information: Principal components of a CPU include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations and a control unit that orchestrates the fetching (from memory) and execution of instructions by directing the coordinated operations of the ALU, registers and other components. The answer is processor registers that supply operands to the ALU and store the results of ALU operations and a control unit that orchestrates the fetching ( from memory ) and execution of instructions by directing the coordinated operations of the ALU , registers and other components.