You can add Logic to your survey questions, tailoring the behavior of the survey by allowing participants to skip questions not relevant to them based on their answers to previous questions.
Logic questions reduce survey dropout rates and improve the data collected by customizing the behavior of the survey based on the response entered. (e.g., If Logic is added to "Are you pregnant?" You can set it so those that answer "yes" will be asked an additional question such as, "How many months are you pregnant?" before advancing on with the survey, while those that answer "no" will automatically advance in the survey without seeing the additional question.)