If you want to use a quiz or a survey to "qualify" participants, using Skip Logic enables you to gracefully exit from the interaction those who do not meet your criteria. 

IMPORTANT: if you "disqualify" participants based on how they answer a question, please know that CredSpark will not record any of their answers submitted up to that point or maintain any other record of their engagement. Use "disqualify" only if you truly do not want to capture any information from that person. 

You can Disqualify participants from a Scored Quiz by ensure the qualifying question is marked as "unscored." 

For example, let's say you ONLY want to collect feedback from people who meet a certain criteria, e.g. recent purchases made. Here's what a participant who does not meet your criteria will see: