From the given options, select the word which will correctly and adequately replace or substitute the expression.

"Related to marriage or to the relationship between husband and wife"

Conjugal

The correct word is conjugal. It means "related to marriage or to the relationship between husband and wife." The other words do not have the same meaning.

• Confluence means "the meeting of two or more rivers or streams."
• Conceit means "an exaggerated opinion of one's own importance or abilities."
• Concern means "a feeling of anxiety or worry about a particular situation."