Which macOS tool is commonly used to reset the NVRAM?

The combination Command + Option + P + R is the correct sequence used to reset the NVRAM (Non-Volatile Random-Access Memory) on macOS devices. NVRAM holds certain settings that your Mac uses quickly to access without having to read from the disk. This includes settings related to display resolution, speaker volume, or startup disk selection. When you reset NVRAM, it clears these settings to their defaults, allowing the system to resolve issues related to these configurations.

When performing this reset, the user will need to hold down the keys immediately after turning on or restarting the Mac. The process should continue for about 20 seconds or until the startup sound plays again, which signals that the NVRAM has been reset.

The other combinations provided are associated with different functions; for example, Command + R is used for booting into Recovery Mode, which allows users to reinstall macOS, use disk utility, or access other recovery features, and thus it does not relate to NVRAM reset.