The answer is:
A coach should demonstrate a leadership the most to achieve her goals.
The explanation:
because in her case she need to be a good influencer in them and guide them to can achieve all goals of what she sets. she need to be a strong guide to make them having fun without lose the game . she need to make them work hard and have fun at the same time. and this situation need a good guid can give the team the power and the tools to achieve goals and success.