Once the files have been uploaded to your survey, you can insert a link to each file into a question or note in your survey. Your respondents then click on the link to open the file.
Please see our Help article on adding files to your survey for more information and instructions.
If your file is larger than 10Mb or is not in one of the allowed file formats, you can host the file elsewhere and then insert a link to it into a note or question. In this case, please refer to our Help article on adding video or other media content to a survey for more information.