Your answer should work around your ability to assess people's potential to complete various tasks. Your leadership style could for example be one of inclusion asking people for information and solutions as a positive ontribution to their ownership of the task. This should then perhaps allow you to show your confidence in their ability by providing not only the tools to do the job but the authority also. With clear and concise instructions of what is expected of them plus encouragement in the form of your confidence that they can do the job. This should then motivate them succeed in completing what has become their task.