A key difficulty facing insurance companies is that people know more about their health than do insurance companies, and that those people who are seriously ill are the most likely to want to obtain health insurance.What is this phenomenon called?

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The Answer of A key difficulty facing insurance companies is that people know more about their health than do insurance companies, and that those people who are seriously ill are the most likely to want to obtain health insurance.What is this phenomenon called?

A Key Difficulty Facing Insurance Companies Is That People Know