Answer:
A public company auditor, in order to be independent, should not audit its own work (as it would if it provided internal audit outsourcing services, financial information systems design, appraisal or valuation services, actuarial services, or bookkeeping services to an audit client).
A public company auditor should not function as part of management or as an employee of the audit client (as it would if it provided human resources services such as recruiting, hiring, and designing compensation packages for the officers, directors, and managers of an audit client).
A public company auditor, to be independent, should not act as an advocate of its audit client (as it would if it provided legal and expert services to an audit client in judicial or regulatory proceedings).
A public company auditor should not be a promoter of the company's stock or other financial interests (as it would be if it served as a broker-dealer, investment adviser, or investment banker for the company).