I would say A because according to Adam smith, he specializes on a free market system without the Government intervention, so the government has to stay out of the economy.
A system that we use here for dating is online dating. There are apps on the smartphone that people use for dating or websites on the computer that allow you to interact with another person.
I hope I helped you! <3
Ming Emperor Hongwu (Ju Yuanzhang) became emperor after the mongols were driven out of China.
Hope this helps! :D
