Question

Why might you consider saving a document in PDF​ format? A. To make it possible to include document properties in the file B. When uploading a document to a proprietary website for easy accessibility by others C. So that the document can be opened on a Mac D. To ensure that a file cannot be opened in any application other than Word

Answer 1

Step-by-step explanation:

the normal right answer is to make it hard for others to change the document, and every computer platform has a way to open PDF files.

so, let's see here what your teacher means by eliminating the clearly wrong answers :

A.

document properties are always included in the file by any word processor (and their file formats).

that is no reason to specifically use PDF.

C.

Mac D cask open also other file formats. no need to go specifically for PDF.

D.

a PDF file can also be opened by at least the ADOBE Reader. so, this is false anyway.

that leaves B. to be the right answer.

but I personally disagree with that as an exclusive criteria. there are other file formats that could be used for that too.