Which of the following is not a programming language of a computer?

The correct answer is (d), Windows. Windows is an operating system, while the other options are programming languages.

A programming language is a set of instructions that allow a computer to perform a task. It is used to create software, such as applications and websites. Some popular programming languages include Java, Python, and C++.

An operating system is a software program that controls the hardware and software on a computer. It provides a platform for other programs to run on, and it manages the computer’s resources, such as memory and storage. Some popular operating systems include Windows, macOS, and Linux.