The best course of action for Wang is to point out the lack of stress calculations to the supervisor and ask for extra time to review the design. This ensures that all safety standards are met and that the integrity of the design is verified before proceeding .

The least ethical reason to choose one of the candidates is B. Choosing a candidate based on traditional gender roles, such as the position traditionally held by a male, is considered unethical as it perpetuates gender discrimination and violates principles of equality and non-discrimination. Such a decision ignores the qualifications and professional merit of the candidates, focusing instead on gender, which is irrelevant to professional capabilities and performance.

Professionals are expected to take responsibility only for work they have prepared, supervised, or adequately reviewed and can support with their own competent judgment. Guaranteeing another party's work implies assuming responsibility for quality, compliance, and performance of something the professional may not control, may not have sufficient access to verify, and may not be able to evaluate to the required standard of care. NPPE professional liability concepts emphasize that a professional must not assume obligations that exceed what they can competently validate, because doing so increases exposure to negligence and contract claims and can mislead clients about assurance levels. Option C captures the core reason: it is difficult (often impossible) to ensure another party's work meets the applicable standard unless the professional is fully involved and performs appropriate review and verification. Options A, B, and D are not the fundamental rationale; the key issue is lack of control and inability to properly assure standard-of-care compliance for work performed by others. Therefore, C is correct.

The NPPE rationale for self-regulation is grounded in public-interest protection combined with the specialized nature of engineering and geoscience work. Because the professions involve complex technical judgment and evolving standards, peers with relevant expertise are best positioned to define standards of practice, assess competence, and evaluate professional conduct against accepted norms-within a legislated framework and with accountability mechanisms. Option D captures this core justification: ensuring compliance with professional legislation, enforcing standards and ethical conduct, and administering discipline and competence systems are functions that rely on technical expertise and informed professional judgment, which are effectively carried out through self-regulating bodies established by statute. Options A, B, and C are weak or incorrect rationales: A is an appeal to history rather than principle; B is not the key Canadian argument and is framed as a comparison; C is inappropriate because higher incomes/taxation are not the purpose of self- regulation, and self-regulation is not justified by private benefit. Thus, D is the strongest reason.

The representative of each party in a mediation must have the authority to conclude a settlement. This is essential for the mediation process to be effective, as the mediator facilitates negotiations with the goal of reaching a settlement that all parties can agree to. If the representatives do not have the necessary authority to agree to a settlement, the process can become futile, wasting time and resources without achieving a resolution.