Answer:
The answer is: C. The trend toward mostly capitalist nations to move toward socialism.
Step-by-step explanation:
Capitalism is an idea that favors free markets, but 100% pure capitalism will never exist. The same happens to socialism, no country is 100% socialist. All the countries in the world are mixed between capitalism and socialism but on different percentages.
For example, in a true capitalistic nation no government could exist since no taxation would be allowed. Governments function with the money of their citizens collected through taxes, but theoretically in a free market taxes don't exist. Currently the US and China are involved in a "trade war" which includes import tariffs, which should not exist according to capitalism.
I'm not sure, but I believe there are no pure socialist countries in the world and they probably have never existed either. Not even the Soviet Union was a pure socialist country and China has become the biggest defender of capitalism in the world.