What is the primary function of a "defense attorney"?

The primary function of a defense attorney is to represent the accused and defend their rights. This role involves advocating for the client's interests throughout the criminal justice process, ensuring that the defendant receives a fair trial, and protecting them from any potential violations of their constitutional rights. Defense attorneys work to present evidence, challenge the prosecution's case, and create the best possible legal strategy for their clients. This includes investigating the details of the case, negotiating plea deals, and preparing for trial.

In contrast, the other options do not accurately reflect the role of a defense attorney. Assisting in the prosecution's case is contradictory to the fundamental purpose of a defense attorney, as their duty is to advocate for the defendant rather than the state. Acting as a judge falls outside the responsibilities of a defense attorney, who is not in a position to make rulings or decisions in court. Similarly, while negotiation may be a part of a defense attorney's duties, their primary focus is on defending their client’s rights and interests rather than negotiating with law enforcement, which typically involves different legal actors altogether.