The external auditor has a responsibility to make a statement of independence to those charged with governance for inclusion in the corporations reports. Essentially, this question pertains to the types of measures that can and should occur within the corporation to enhance external auditor independence rather than just relying on the auditors statement. Based on the above statement, what are some measures the board can undertake to enhance the likelihood of external auditor independence being achieved? Formulate your answer. (Please provide four reasons to support your answer).