Your question is Collaborate With Developers For Testability. 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).
How would you collaborate with developers to ensure new features are designed with testability in mind? Explain how you would engage during requirements, design, implementation, and review. Address test strategy, automation, observability, and trade-offs when testability requirements affect delivery.