In the vi editor, which key combination exits insert mode?

In the vi editor, the key combination that exits insert mode is the ESC key. When you are in insert mode, you can type and edit text freely. However, to switch back to normal mode—where you can navigate the file, execute commands, or save changes—you need to exit insert mode. Pressing the ESC key effectively takes you out of insert mode and returns you to normal mode, allowing for further command input.

The other options provided serve different functions or are not valid commands for exiting insert mode. For instance, Shift + I is used for entering insert mode at the beginning of a line, and Ctrl + C does not have a standardized function within the vi editor to exit insert mode. Similarly, Alt + I might not be recognized as a command to exit insert mode in the context of vi. Understanding the different modes of the vi editor, namely normal mode and insert mode, is essential for efficient navigation and editing while working with this classic text editor.