Which amendment guarantees trial by jury?

The amendment that guarantees the right to a trial by jury is the Sixth Amendment. This amendment is part of the Bill of Rights and ensures several key rights for individuals accused of crimes, including the right to a speedy and public trial, an impartial jury, and the ability to confront witnesses. The specific provision for a jury trial is crucial in criminal cases, as it allows for a group of peers to evaluate the evidence and determine guilt or innocence, thereby serving as a check on potential governmental overreach in the judicial process.

In the context of other options, while the Fifth Amendment does address rights related to legal proceedings, such as protection against double jeopardy and self-incrimination, it does not specifically mention the right to a jury trial. The Third Amendment pertains to the quartering of soldiers in private homes, which is unrelated to legal trials. The Seventh Amendment addresses civil cases and also guarantees the right to a jury trial, but it is more relevant in the context of civil matters rather than criminal cases. Thus, the sixth amendment is rightly recognized as the primary source that guarantees the right to trial by jury in criminal prosecutions.