Do any economic systems in the world reflect the purest forms of command or laissez-faire economies?

No, there is no any economic systems in the world that reflect the purest forms of command or laissez-faire economics.

Because in most economies, government plays an important role and if it is not, there is some kind of involvement of government is must be in the system. The government can use many ways to involve in the economic system.

the correct answer option is b. a single paragraph.

explanation:

when you are thinking about paragraph​ topics, you should always choose a subject that can be adequately addressed in a single paragraph.

a paragraph is a piece of writing consisting of a few sentences that deal with a single theme. it has only a single idea that the paragraph revolves around and talks about.

so a paragraph topic must be chosen wisely where a single idea can be communicated in a single paragraph.

a. money supply  

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