"I'm sorry, this is a stupid question... but..."
The hardest challenge in any workshop is reaching the point where the student feels comfortable enough to not prepend questions with "Sorry...".
There are no stupid questions when learning to code. I don't think it is actually possible to ask a stupid question. If someone genuinely wants to learn, by definition, it cannot be a stupid question.
At the beginning of every workshop, I explain to my student, there are no stupid questions. Whenever someone apologises for wanting to learn, I invite you to pause your workshop, and explain why you think there are no stupid questions.
When students feel confident asking questions without fear and without judgement, they will learn more.