A MS-PowerPoint presentation is generally saved with an extension:

Correct option is C

The correct answer is (c) .ppt
Explanation:
● .ppt was the standard file extension for PowerPoint presentations in older versions (97-2003).
● Modern versions use .pptx.
Information Booster:
● .pps – PowerPoint Show
● .pot – PowerPoint Template
Additional Knowledge:
● .docx – MS Word, .xlsx – MS Excel.