During the booting process, what occurs?

During the booting process, the primary task is to initialize the system and load the operating system into the computer's memory, so the correct answer highlights that the complete operating system is ultimately loaded into memory.

At the beginning of the boot process, the computer's firmware, such as the BIOS or UEFI, conducts a Power-On Self Test (POST) to ensure all essential hardware components are functioning correctly. Once that is completed, the firmware finds and reads the bootloader from the disk, which is responsible for loading the entire operating system into memory. This enables the computer to switch from the firmware to the OS and prepare it to manage hardware resources and execute applications.

Once loaded, the operating system manages the system and applications, taking control over the hardware and allowing other components, like drivers and user interfaces, to function properly. Thus, when the option states that the complete operating system is loaded into memory, it accurately reflects this critical step in the booting process.

Other choices focus on different aspects of the process, such as only partially loading the OS or dealing with applications, which do not capture the full scope of what occurs during booting.