Which of the following statements best describes the key term certification? a. Completion of education or other requirements to practice a profession b. Completion of continuing education units in a parallel profession c. A process for external, reliable, and objective validation of agency performance against a specific set of standards, and some form of reward or recognition for agencies meeting those standards d. A process that attempts to determine as systematically and objectively as possible the relevance, effectiveness, and impact of activities in the light of their objectives