Final answer:
The final chemical element that can be made by fusion within a high-mass star is iron.
Step-by-step explanation:
The final chemical element that can be made by fusion within a high-mass star is iron. Massive stars have the capability to start fusion processes in their centers, resulting in the synthesis of heavier elements. However, iron is the endpoint of this fusion process as the fusion of iron atoms requires energy instead of releasing energy like previous fusion reactions. This makes iron the most stable and tightly bound nucleus.