According to IIA guidance, which of the following statements is true regarding proficiency?

According to IIA guidance, internal auditors are encouraged to obtain appropriate professional designations. This encouragement is part of a broader recommendation to pursue continuous professional development and maintain proficiency in audit practices. The statement correctly reflects the IIA's position on the importance of professional qualifications, though it does not imply that specific designations are mandatory.

IIA standards and guidelines, which promote ongoing professional education and encourage auditors to obtain certifications relevant to their field of work.