From Carleton Moodle Docs
A teacher can add a Choice activity in a course when editing is turned on by clicking an 'Add an activity or resource' link (or, if not present, the "Add an activity" drop down menu) and selecting Choice.
To see all the settings expanded, click the link "Expand all" top right
Give the choice a name (which students see on the course page) and a description. You add the actual question in the description box for example: How well do you do feel you understand module 2?"
If you have only a few choices, choose to display them horizontally; if you have a large number, choose to display them vertically.
Type the selections you wish to appear next to the radio buttons in the options fields.
Setting 'Allow choice to be updated' will allow students to change their mind after they have voted. The default No means they cannot change their first selection.
If you allow more than one choice to be selected, the checkboxes will display differently to alert students that they can make more than one selection:
If learners are free to choose any option, leave 'Limit' at the default 0. If you want to restrict them to selecting a particular number, enter that number in the 'Limit' box. '
Warning!!' If you unintentionally check this box but don't add a number then your students won't be able to select any choices and will get confused!
Here you can set a start and/or end date for the Choice.
Ticking the Show preview will mean that students can view the choices before the time when they are allowed to make their selection.
Think carefully about whether (and how) you wish student to see the responses. 'Publish' simply means 'display to students'.
Showing a column for unanswered may be useful if you need to quickly check who has not entered a choice.
A teacher may download the results of a Choice activity by clicking the 'View... responses' link and then selecting from ODS, Excel or text format.
If your Choice activity doesn't display as you wish, check the site settings below:
A description for the Choice may or may not be obligatory depending on Site administration > Plugins > Activity modules > Common settings,
The following capabilities relate to the Choice activity: