Question

question 16 of 20
what is the purpose of file extensions?
a. they execute the mail merge function.
b. they tell the operating system what kind of document you are
creating.
c. they run the spelling checker and grammar checker features.
d. they set up your files in an organized hierarchy.

Explanation:

File extensions are used by the operating system to identify the type of file (e.g.,.docx for Word documents,.jpg for images). This helps the OS determine which application should open the file. Options A (mail merge), C (spelling/grammar check), and D (file hierarchy setup) are not functions of file extensions.

Answer:

B. They tell the operating system what kind of document you are creating.