Your question is Version Control in Regulated Delivery. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are joining a software team that ships changes to a regulated healthcare application, where code changes must be traceable, reviewable, and recoverable. The interviewer wants to understand not just which version control tools you know, but how you use them to support reliable engineering execution.
What tools do you use for version control, and why are they important in a software delivery process like this?