The United States and Canada have "diversified" economies that have multiple kinds of economic activity.
This is because a diversified economy is a type of economy that is based on multiple or different economic sectors.
Typically, the economy of the United States and Canada is based on different sectors such as services, technology, manufacturing, information, among others.
Hence, in this case, it is concluded that there are various economic activities in the United States and Canada. Thus the correct answer is option B. "Diversified."
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