NPPE ethics and professional practice principles require professionals to practise only in areas where they are competent, based on education, training, and experience, and to take reasonable steps to maintain and enhance competence. Competence is not limited to tasks previously performed; it can be achieved through appropriate training and learning, provided the professional can competently apply that knowledge and recognizes limits. Here, the engineer has recently completed extensive, targeted training relevant to vaulted structural designs and is confident they can competently review and assess the drawings. Accepting the assignment is appropriate if the professional genuinely has the competence to perform the review to the standard of a reasonably prudent practitioner, and if they will seek peer review or additional specialist input if any aspect exceeds their capability. Option A is too restrictive because “area of expertise” can expand through professional development. Option B is incorrect because the scenario states the professional has obtained training and is not misrepresenting abilities. Option D is incorrect because responsibility for competent professional judgment cannot be transferred to an employer; the professional remains accountable for work they approve.