Which of the following best demonstrates that the internal audit activity is using due professional...

The use of due professional care by the internal audit activity is best demonstrated by internal auditors undertaking the necessary training to complete their audit work. Due professional care involves applying the diligence and judgment needed to conduct audits effectively. This includes continuous training and development to ensure auditors are proficient in their field and up-to-date with relevant audit standards, technologies, and methodologies, which aligns with the International Standards for the Professional Practice of Internal Auditing from the Institute of Internal Auditors (IIA).

The Institute of Internal Auditors (IIA) - International Standards for the Professional Practice of Internal Auditing