Define or describe public relations according to some of the experts in the field

What will be an ideal response?

Possible answers:
• Seitel: public relations is a planned process to influence public opinion, through sound character and proper performance, based on mutually satisfactory, two-way communication
• Edward Bernays: information given to the public, persuasion directed at the public to modify attitudes and actions, and efforts to integrate attitudes and actions of an institution with its publics and of publics with those of that institution
• Public Relations Society of America (PRSA 2012): public relations is a strategic communication process that builds mutually beneficial relationships between organizations and their publics
• Sixty-five public relations leaders in 1975: public relations is a distinctive management function which helps establish and maintain mutual lines of communications, understanding, acceptance and cooperation between an organization and its publics; involves the management of problems or issues; defines and emphasizes the responsibility of management to serve the public interest; helps management keep abreast of and effectively utilize change, serving as an early warning system to help anticipate trends; and uses research and sound ethical communication techniques as its principal tools.