Adding to Surya's reply. Creating a single radio button "yes" and making it required is an excellent solution to act as an attestation.
To expand on the idea you can use Fusion to validate in some cases, ie confirming that document xyz is attached.
- Attestation = yes
- Fusion searches request for document name containing xyz
- if yes, add confirmation note (or do nothing as the requester was accurate)
- if no, push request to "awaiting feedback" status and add a note stating the requirement was not met