Explanation:

The physical components of a computer, also known as hardware, are the tangible parts that make up a computer system. These components are responsible for the input, processing, storage, and output of data. They work together to enable the computer to perform various tasks and functions.

Hardware components:

1. Central Processing Unit (CPU): The CPU is the brain of the computer and is responsible for executing instructions and performing calculations. It consists of the control unit, arithmetic logic unit, and registers.

2. Memory: Memory is where the computer stores data and instructions that are currently being used. It can be divided into two types: primary memory (RAM) and secondary memory (hard drive, SSD, etc.).

3. Storage: Storage devices, such as hard drives and solid-state drives, are used to permanently store data even when the computer is turned off.

4. Input devices: Input devices are used to enter data and commands into the computer. Examples include keyboard, mouse, microphone, and scanner.

5. Output devices: Output devices are used to display or present information from the computer. Examples include monitor, printer, and speakers.

6. Motherboard: The motherboard is the main circuit board that connects and allows communication between all the components of the computer.

7. Peripheral devices: These are additional devices that can be connected to the computer to enhance its functionality. Examples include graphics cards, sound cards, and network cards.

Software vs Hardware:

Software refers to the programs, data, and instructions that tell the computer what to do. It includes the operating system, applications, and user data. Software is intangible and can be installed, updated, and deleted. On the other hand, hardware is physical and cannot be easily changed or modified.

While software is responsible for controlling and managing the hardware components, the hardware is what actually performs the tasks and operations. Without hardware, software would have no means of execution.

Therefore, the correct answer is option 'B' - Hardware.