In the article, New Time-saving Features in G-Suite for Education, author Ryan Webber states:
Also debuting today, is a top-requested feature from our education customers — the new “File upload” question type. Students can now upload files from their computer or Drive — all of which are neatly collected in a folder in the teacher’s Drive. This means students can now add files—from a photo for the marching band program to videos of French dialogue practice—directly to Google Forms. Note: This feature is currently only available for intra-domain use.
I look forward to hearing how you can use this great, new feature in your classroom!