It's not feasible to add attachments to Microsoft Forms. We understand it's more convenient if users are able to add attachments to Microsoft Forms. You could vote
this feedback in Microsoft Forms Uservoice to let the related team hear your voice. Given the tag of that feedback is "working on it", you may also follow up Office 365 Road Map to get the updates for this feature.
Thanks for your understanding.
14 people were helped by this reply
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.