Final answer:
The non-icon view missing from the list and present in File Explorer is List, which allows users to view a large number of files compactly.
Step-by-step explanation:
The non-icon views available in File Explorer include List, Details, Tiles, and Content. Therefore, the correct answer to the question is option 1) List. When working with File Explorer in Windows, users can choose different ways to view and organize their files. The List view is particularly useful for viewing files at once, as it presents them in a compact list without large icons or preview images. This allows users to see many files on the screen at the same time. When managing a large number of files, having different view options helps users to find and sort their files more efficiently, which is a related keyword that users may often search for.