Question Hint is a feature to help your respondents by giving them small hints for the answers. When you've activated this feature, a small question mark will appear above the question. If the respondent clicks the icon, they'll get a popup with additional information or a hint.
Professional 
Enterprise ReportR DistributR In this guide we'll discuss the following:
1. Activate Question hints
Go to the Extra options tab and scroll down to Other Options. Toggle to turn on Question hints.
Now when you go back to the survey editor, you'll see a text box underneath the question text box where you can enter your hint.
2. Example
Here's how the hint icon will be shown:
By clicking on the question mark icon, the hint will be displayed above the question:
What's next?
- Fill in default responses – use this feature if you want to send respondents a survey with some pre-filled answers. Although the answers that you pre-fill will be shown to respondents as if they have already answered, they are still able to edit the answer.
- Save contact details - If you're asking respondents for their personal information, why not save yourself time later. Rather than transferring the data collected to a new contact list, use our save respondent details feature to build the contact list automatically.
- Labels and messages – did you know you can customize the messages that get shown to respondents, as well as the text of the labels? Make sure you’ve finished creating your survey, then see if any labels or messages could do with improvements.