Adobe Acrobat Reader DC - Read Out Loud  
  Below, is the path to use the Adobe Reader - "Read Out Loud" functionality within PDF files.  MS Word allows you to save documents in the PDF Format.  It is important to keep this in mind when providing "accessibility" for students.  The first step is to "Activate Read Out Loud" from the tabs below; then everything else is self explanatory.  
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  If you decide to download the 2015 version of Adobe Reader, I highly recommend that you uncheck these two boxes.  Here is a link to the download site-