The criterion of members to ensure quality and competence.

• A. Diversity
• B. Certification
• C. Accreditation
• D. PPCS

Answer: (B)

Certification directly validates that individual members meet defined standards of knowledge, skills, and professional ethics before they are allowed to practice. This process typically includes standardized exams, supervised field experience, and requirements for ongoing education, with renewals to ensure ongoing competence. By focusing on the person, certification creates a portable, recognized signal of quality that employers and the public can trust. In contrast, diversity concerns representation and demographics, not necessarily the competence level of each member. Accreditation evaluates a program or organization against set standards, ensuring structural quality of the entity rather than the individual practitioner. PPCS is not a universally recognized criterion for ensuring personal qualifications in most professional contexts. Therefore, certification best ensures the quality and competence of members.