What amendment guarantees the right to a jury trial in civil actions?

The Seventh Amendment of the United States Constitution specifically guarantees the right to a jury trial in civil cases when the amount in controversy exceeds twenty dollars. This amendment was ratified in 1791 as part of the Bill of Rights and reflects the importance placed on civil jury trials in ensuring a fair legal process. It emphasizes the role of juries as a check on government power and as a fundamental part of the judiciary in protecting individual rights in civil disputes.

In contrast, the Sixth Amendment primarily addresses the rights related to criminal prosecutions, including the right to a speedy and public trial, the right to confront witnesses, and the right to counsel, but does not apply to civil cases. The Eighth Amendment focuses on prohibiting excessive bail, excessive fines, and cruel and unusual punishments, while the Ninth Amendment asserts that the enumeration of certain rights in the Constitution does not mean that other rights not mentioned are not also protected. Thus, the focus of the Seventh Amendment on civil jury trials makes it the correct answer for this question.