Answer:
The role of defense lawyers is to provide the best possible legal counsel and advocacy within the legal and ethical limits of the profession.
Step-by-step explanation:
Option D accurately describes the role of defense lawyers. Defense lawyers are legal professionals who represent individuals or organizations in criminal or civil trials. They are responsible for providing legal advice and representation to their clients, and advocating for their clients' interests to the best of their ability within the legal and ethical limits of the profession. Defense lawyers are not responsible for deciding their clients' guilt or innocence, and are prohibited from using false or perjured testimony in court. Therefore, option D is the correct answer.