Concept:Booting a computer requires the operating system to be loaded first before any application software can run.Explanation:A. It is good practice to remove removable storage media before switching on a computer to avoid booting from unwanted devices.B. A computer should be shut down properly before disconnecting electric power to prevent data loss or damage.C. Random Access Memory (RAM) is indeed part of the main memory of a computer.D. This statement is false because the operating system must be loaded before application software, not the other way round.Answer:Option D is the statement that is not true.