The sixth amendment to the us constitution protects the rights of all citizens. people who are suspected of crimes. people who are on trial in criminal court. people who are in prison.

The answer that best completes the given statement above is the second option: people who are suspected of crimes. The sixth amendment to the US constitution aims in protecting the criminal defendants and that, they are given the right to a just and speedy trial and also, they will have the chance to defend themselves as well.