Block

The <block/> tag allows you to block respondents that select particular answer options. One of the common scenarios utilizing the Block setting is a need to bar the respondents of a certain age from accessing the form.

You can use this tag along with the <QUOTAxxx/> tag.

Checkbox is available for the following question types only:

Pick one (Radio Buttons): including 'Other' answer option;
Pick one with Comment: including 'Comment' answer option;
Check all that apply: including 'Other' answer option;
Single line text;
Numeric allocation (not available for the Total answer option);
Dropdown box;
List box;
Rating scale;
Matrix;

How to insert the tag

To apply this feature:

Click on the Wrench on the right of the answer option field;

Check the Block box;

Or Insert the <BLOCK/> tag next to the answer choice. The answers input mode must be switched to Standard before inserting the tag.

Save your question.

Note that if the block action is enabled in all of the question answer options, it will deactivate the particular form.
You can also insert <QUOTAxxx/> and <BLOCK/> tags in simple editing mode when the WYSIWYG editor is turned off to enable both features respectively.
That responses of blocked respondents will be regarded as not completed or as completed partially.
If both tags (<QUOTAxxx/> and <BLOCK/>) were put into two separate responses for the same question, the survey will become inactive once the number of respondents who select the answer with the tag <QUOTAxxx/> reaches xxx. If the question includes extra answer options without tags applied, the survey will allow respondents to complete the survey and will count them as incomplete.