You can approve or reject responses to open-ended polls before they appear live on-screen. This can save quite a bit of embarrassment if you have a few pranksters in the audience.
To enable the Moderation feature, scroll to the section below your poll at the bottom left and check the box next to Moderator.
Once enabled, you can click Hide to reject a response and hide it from the chart. You can select Show and the response will display on the Live Text Wall or Word Cloud. Nothing will display on the chart unless you choose to Show it.
If you are presenting from a single screen (e.g., on a single laptop with no switcher) you or a teammate can log in from a second computer to moderate responses, or you can approve responses on your smartphone or web-enabled device using the Mobile Presenter app for iOS and Android. The approved responses show up on the poll you are presenting.