Final answer:
It is true that an ad set may receive no conversions if not set up correctly; changes should be made to improve performance, targeting, call to action, and budgeting which are key factors affecting conversions.
Step-by-step explanation:
It is true that an ad set may get zero conversions depending on how it's set up. If your ad set is not performing well, you should indeed consider making changes before publishing it. Different factors can contribute to a lack of conversions, such as targeting the wrong audience, having an unclear call to action, or setting an inappropriate budget. Adjusting these elements can lead to improvements in the ad set's performance. For example, refining your audience to ensure your ad is seen by those most likely to be interested in your offering can significantly increase the likelihood of conversions. Similarly, clarifying your call to action and ensuring that your budget is sufficient to gain adequate exposure are crucial steps to success.