Which of the following is NOT a primary function of an operating system?  *1 pointProcess managementMemory managementFile managementApplication development

To determine which option is NOT a primary function of an operating system, we can analyze each given function and its relevance to operating systems.

1. Process management: This is a core function of an operating system. It involves handling processes in a computer, managing their execution, ensuring efficient CPU usage, and providing mechanisms for synchronization and communication.

2. Memory management: This is another fundamental function of an operating system. It involves managing the computer's memory allocation, ensuring that each process has the necessary memory space and that memory is used efficiently.

3. File management: This function deals with the organization, storage, retrieval, naming, sharing, and protection of files. It is also a primary role of the operating system.

4. Application development: This is NOT a primary function of an operating system. While operating systems may provide APIs and environments for developers to create applications, the actual development of applications is typically done by developers using various programming languages and tools.

Final Answer

Application development is NOT a primary function of an operating system.