What do slides usually contain?

The correct answer to this question is option 4 – All of the above
A slide in power point is a page created using the Microsoft Power point program. It is a single page of presentation where you can create your desired result.

The slide can contain title, text, graphs, drawn objects, shapes, clip arts, drawn art, and other visual designs.
Slides are not only seen in Microsoft power point. They are also seen in other presentation programs such as Apple Keynote, Apache, OpenOffice and Libreoffice.
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