most frequently recommended Google Forms Add-ons. Choice Eliminator was one of the Add-ons on that list. Unfortunately, official support for Choice Eliminator was eliminated at the end of February. Many people have since asked me for an alternative. The best alternative that I've found so far is Choice Eliminator Lite.
Choice Eliminator Lite will remove choices from a Google Form as they are used up. For example, if you were to create a Google Form for reserving computer lab space, the time slots would disappear from the form as they were selected.
The difference between Choice Eliminator and Choice Eliminator Lite is that the lite version is not intended to be used by large groups simultaneously.