Hi Catherine,
Thanks for posting in the community. We are happy to help you.
I'm afraid there are no built-in features/issues that meet your needs at this time. In this case, I recommend you vote for the following suggestion in our Microsoft Feedback Portal where other members also post and vote for their suggestions. It's the platform for us to hear your voice and improve our product.
Allow multiple answers in the likert
Sorry for the inconvenience that happened to you. Appreciate your understanding and patience.
Sincerely,
George | Microsoft Community Moderator