Answer:
Communism is the next evolution in forms of government.
Explanation:
Communism is a form of government where all things are owned by the public and people earn according to what they contribute for the government. This political theory was propagated by Karl Marx, opposed to the theory of democracy and capitalism.
In the given sentence "there are some who say that communism is the wave of the future", implied meaning is that communism will become the future evolutionary method for forming governments. The "wave" here implies an influencing force that will be the lead to its prominence. Thus, the sentence can be effectively rephrased as communism being the next evolution.
So, the correct answer is the fourth option.
