Which of the following roles acts on behalf of the government in court?

The role that acts on behalf of the government in court is the prosecutor. A prosecutor is responsible for presenting the case against an individual accused of committing a crime, representing the interests of the state or the government in prosecuting criminal offenses. This includes gathering evidence, interviewing witnesses, and ultimately seeking a conviction in court. The prosecutor plays a crucial role in the criminal justice system, ensuring that laws are enforced and justice is served on behalf of society.

In contrast, a defense attorney represents the accused, ensuring their rights are protected and that they receive a fair trial. The judge oversees court proceedings impartially and makes rulings on legal matters, but does not advocate for either side. A bailiff primarily maintains order in the courtroom and assists the judge, without taking a role in legal arguments or representation of the government.