"Clarification questions" refers to asking additional questions to make sure you understand something clearly. It's like having doubts or confusion about a topic and seeking more information to clear up your doubts. Full definition
You will be asked to provide your detailed report to an experienced investigator, who may ask you some additional clarification questions, while taking the details of your report. (recbc.ca)
Listen attentively, but don't be afraid to ask clarification questions if something isn't obvious; the last thing you want is to inadvertently cause trouble for your manager, team, or company. (careerbuilder.com)
I had many conversations with Satoshi via email shortly thereafter, mostly reporting bugs, asking clarification questions, and making suggestions regarding ways to improve the software. (blog.dustintrammell.com)