Final answer:
In 1962, PRSA established boards to set professional standards and ethics for public relations, professionalizing the field and building trust.
Step-by-step explanation:
The Public Relations Society of America (PRSA) established boards in 1962 with the purpose of setting professional standards and ethics within the field of public relations. These boards were created to ensure that PRSA members adhered to the best practices and maintained the highest level of professionalism in all their dealings. This action was a significant step towards professionalizing the practice of public relations and building trust with clients and the general public.