How do I add multiple short free text answer option with the option to add another line by respondent?
E.g. I'd like to ask What are you favorite cities?
The responded should be able to list as many as he/she wish, of course I will limit the number of potential answer lines, but how not to scare him/her with the long list of free text fields?

Thanks!

Two possibilities:

1) Ask an initial question "How many favourite cities do you have?" and then base sub-question relevance on that answer.

2) Insert sub-question relevance so they are only shown if the previous is answered.

the respondents should not limited with one particular number, unfortunately

Then use the second solution.