Daz3D will not read those files, as they are just text. However, the files can be "rendered" as an image, for use within Daz3D. Or, if you are asking about the other side of things, Daz3D can render images or video, which can be used along with your presentations.

Both of those formats you mention, do not normally include "video formats". Neither of them are "image formats". PDF is just a text layout format for printing pages. MS-Word is just a text-formatting program, for use with printing too, for direct display in MS-Word, or on printed paper. However, it can export in other formats. (Not to be confused with "Word pad".)

If you can put the words on an image, in any form, they can be used within Daz3D, for display. However, Daz does not have any form of "text-rendering code", to convert text into 3D objects.

It can be, yes. You can build a scene in Daz Studio, and then render it out into a variety of different formats.