Your question is Taking Initiative End-to-End. 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).
Describe a situation where you took initiative and saw a project from the beginning to the end. Explain how you identified the opportunity, defined the work, aligned the necessary people, handled obstacles, and measured the outcome. Focus on your individual contribution rather than describing only what the broader team did. Be prepared to discuss what you learned and what you would do differently.