There are many tools that will let you ask questions of participants in an online meeting, and most meeting platforms now offer a version of this.
The benefits of using MentiMeter or similar platforms is that they produce visually pleasing presentations of your findings, which can be used for reporting and during meetings, for engagement.
MentiMeter has recently changed their settings to only two slides free per presentation, but you can create several presentations if you have more than two questions.
