Is there a way to add a password protect on a single survey to ensure no one has access to it given sensitive nature of content?
While we do not have the ability to password protect surveys in this way, you can limit users’ access to the survey by taking advantage of the Users, Teams and Roles. This will allow you to assign the survey to a specific team that only you belong to. The result is a survey that none of your other users can access.
See here to learn more.
I hope this helps!