The idea that people who marry may be different from those who do not marry, for example, they may be happier, healthier, and have more money is called a/an:

Name: The idea that people who marry may be different from those who do not marry, for example, they may be happier, healthier, and have more money is called a/an:
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The Answer of The idea that people who marry may be different from those who do not marry, for example, they may be happier, healthier, and have more money is called a/an:

The Idea That People Who Marry May Be Different from Those