Carlos is studying the relationship between cheating and divorce among married couples. He wants household income to be a control variable. Which is the best way for Carlos to do this?
A) Only select couples where both spouses work.
B) Select couples with a range of different household incomes.
C) Select couples with the same household income.
D) Only select couples where one of the spouses works.

Question

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The Answer of Carlos is studying the relationship between cheating and divorce among married couples. He wants household income to be a control variable. Which is the best way for Carlos to do this?
A) Only select couples where both spouses work.
B) Select couples with a range of different household incomes.
C) Select couples with the same household income.
D) Only select couples where one of the spouses works.

Carlos Is Studying the Relationship Between Cheating and Divorce Among