3. Form the Validation setup
Next step to consider, in our opinion, is the validation setup.
Go through all of the questions of your survey and in the section Validation found in the Settings set up expression, numeric, text, regex and e-mail validators that will regulate the formatting and possibilities of responses to your questions.
This way you will be able to better regulate the quality of responses submitted. For example, if you have Single Input question to find out the participants' e-mail addresses, the e-mail validator set to the question will help ensure participants use the correct format to put in their e-mail address.