Question

What is the purpose of a file extension?
It let's an OS know where to look for a file.
It let's an OS know which software Interacts with a file.
It let's an OS know how big a file is.
It let's an OS know which files are safe to delete.

Answers

GPT-4o mini
The correct purpose of a file extension is:

**It lets an OS know which software interacts with a file.**

File extensions help operating systems determine the format of a file and which application is associated with that format for opening or editing the file. For example, a file with a `.txt` extension is typically opened with a text editor, while a file with a `.jpg` extension is usually opened with an image viewer.

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