Question Options
Depending on the question type, when you expand the question in screeners >> questions, you'll notice a few options here:
There are also options for the questions you can control for different scenarios. Most options are self-explanatory, but the one confusing option is "detect contact questions" which you should turn off if you are not gathering any email/phone with your responses.
Last, please note the place to localize/customize text labels is right below options: