A same-sex couple is denied the right to marry by the state they reside in. The couple sues the state, and the case goes to the Supreme Court. The Supreme Court rules in favor of the couple. Which constitutional amendment supports the court's decision? First Amendment Fourth Amendment Fifth Amendment Fourteenth Amendment

The constitutional amendment that is most relevant to the Supreme Court's decision in favor of a same-sex couple's right to marry is the Fourteenth Amendment.

The Fourteenth Amendment, Section 1, states, "No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws."

The Supreme Court has cited the Equal Protection Clause of the Fourteenth Amendment in cases related to marriage equality, arguing that denying same-sex couples the right to marry violates their constitutional right to equal protection under the law. Notable cases include Obergefell v. Hodges (2015), in which the Court ruled that same-sex couples have the fundamental right to marry.