What is the primary function of a defense attorney in a criminal trial?

The primary function of a defense attorney in a criminal trial is to advocate for the rights of the accused. This role is fundamental to ensuring that the accused receives a fair trial and that their legal rights are protected throughout the legal process. The defense attorney examines evidence, interviews witnesses, and presents a defense case aimed at challenging the prosecution's arguments, thus ensuring that the accused's perspective is heard and considered in court.

This advocacy ensures that the accused has representation during critical phases of the trial, including cross-examination of witnesses and the presentation of evidence supporting the defense's claims. The defense attorney also has the duty to ensure that the legal process is followed correctly and that any potential violations of the accused's rights are addressed. This commitment to the rights of the accused is essential in maintaining the integrity of the legal system, as it balances the power of the prosecution and safeguards against wrongful convictions.

In contrast, the other roles outlined in the options do not reflect the core responsibilities of a defense attorney. Arguing for the prosecution's case contradicts the defense attorney’s role. Providing legal counsel to witnesses does not fall primarily under the defense attorney's responsibilities, as their focus is on representing the accused. Acting as the judge’s advisor is also outside the scope