正解:C
Explanation
Terminal is an application that allows access to the command line in macOS. The command line is an interface that allows users to interact with the operating system and perform various tasks by typing commands and arguments. Terminal can be used to launch programs, manage files and folders, configure settings, troubleshoot issues, and run scripts in macOS. PsExec, command.com, and CMD are not applications that allow access to the command line in macOS.