Which amendment was crucial in the Roe v. Wade decision?

The Fourteenth Amendment was crucial in the Roe v. Wade decision because it contains the Due Process Clause, which the Supreme Court interpreted as providing a right to privacy that extends to a woman's decision to have an abortion. The Court ruled that this right to privacy encompasses personal choices regarding family and reproduction, establishing that access to safe and legal abortion falls under this protected right. This interpretation formed the foundation for the ruling in Roe v. Wade, making it a landmark decision in the context of reproductive rights and privacy rights.

The other amendments mentioned (First, Fifth, and Sixth) focus on different rights and protections that do not relate directly to the right to privacy or reproductive rights in the context of Roe v. Wade. Thus, they were not pivotal in shaping the Court's decision in this case.