Which version of this candidate's answer best demonstrates Growth Mindset and Self-Awareness with strong ownership and impact?

Which version of this candidate's answer best demonstrates Growth Mindset and Self-Awareness with strong ownership and impact? Version 1: "I noticed my skills in machine learning were outdated. I enrolled in an advanced course, completed projects to practice, and improved our model accuracy by 10%." Version 2: "We realized our team needed better machine learning skills. We took a course together and improved our model accuracy by 10%." Version 3: "During a project, I saw a gap in my machine learning knowledge. I asked my manager for training and completed it. Our model accuracy improved." Version 4: "I identified a gap in my machine learning skills during a project. I independently completed an advanced course and applied new techniques, improving model accuracy by 10%."