Question

4 What do you mean by extension and what is the extension of Microsoft PowerPoint
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Answer 1

Answer:

PowerPoint was created by Robert Gaskins and Dennis Austin at a software startup in Silicon Valley named Forethought had been founded in 1983 to create an integrated environment and applications for future personal computers that would provide a graphical user interface, but it had run into difficulties requiring a "restart" and new plan.

Answer 2

PowerPoint presentation (Microsoft)
PPT is a file extension for a presentation file format used by Microsoft PowerPoint, the popular presentation software commonly used for office and educational slide shows. All text images, sound and video used in the presentation are contained in the PPT file.