I believe the answer is C. Hope this helps
What are you asking here?
It would be "d. appointment power" that allows him or her to appoint ambassadors, cabinet members, and all military officers, since this is one of the ways in which the president exerts his power over the nation.
The correct answer is - D. how to make iron.
The Zhou dynasty was one of the greatest dynasties of China, and among many achievements of their reign, the artisans of this dynasty managed to learn how to make iron. This was revolutionary for the Chinese people, and it was of great use in the agriculture after the tools for it started to come in iron version, and it made everything much easier, quicker, and more efficient.
