If you are unsure about an answer to a question on a job application, you should?

Writing "N/A" (not applicable) on a job application when you are unsure about an answer is considered a professional and appropriate response. This indicates to the employer that the question doesn't pertain to your experience or qualifications. It helps maintain clarity and ensures that you’re not providing false information.

Leaving the question blank could create a negative impression, as it might suggest an unwillingness to engage with the application process or a lack of attention to detail. Making up an answer is also problematic, as it can lead to discrepancies if your statement is later verified, potentially harming your chances of being hired. Therefore, using N/A allows you to handle the situation honestly while maintaining a professional tone in your application.