Final answer:
The goal level where some goals might not require supporting goals is at the ultimate goals level, which represents the final objectives and may not always need supporting goals if they are achievable and appropriate.
Step-by-step explanation:
The goal level where some goals might not require supporting goals is at the ultimate goals level. Ultimate goals represent the final objectives one wishes to achieve, and they can be seen as the end destination in a goal-setting journey. At this level, while supporting goals can certainly aid in providing a structured path to reach the ultimate goals, they may not always be necessary if the ultimate goal is achievable and appropriate on its own. The existence of supportive goals greatly depends on the complexity and nature of the ultimate goal itself. In contrast, short-term, intermediate, and long-term goals often require supporting goals for successful completion because they act as stepping stones towards achieving the ultimate goals.