According to the Model Rules, what is a primary obligation of licensed professional engineers?

A primary obligation of licensed professional engineers is to practice only in areas of competence and current technical standards. This commitment ensures that engineers apply their knowledge and skills appropriately, maintaining the integrity of the profession and safeguarding public health, safety, and welfare. By practicing within their areas of expertise, engineers can provide the highest quality of work, rely on sound engineering principles, and stay updated with the latest technological advancements and regulatory standards. This standard not only enhances the reputation of the engineering profession but also instills trust among clients, stakeholders, and the public.

The other options do not align with the core responsibilities that licensed professional engineers uphold. Ensuring design documents are reviewed by a panel of experts is a good practice but not a primary obligation. Expressing public opinions without restrictions can lead to conflicts of interest and ethical dilemmas. Accepting any contract regardless of conditions undermines professional integrity and can endanger public safety, which is contrary to the ethical responsibilities of an engineer.