According to IIA guidance, which of the following is necessary for internal auditors to comply with the requirements for proficiency?

1. Sufficient consideration of current activities, trends, and emerging issues to effectively carry out their professional responsibilities.

2. Ability to provide relevant advice and recommendations to management and the board.

3. Understanding of key IT risks and controls and the ability to identify fraud using technology-based audit techniques.

4. Knowledge, skills, and other competencies necessary to perform individual responsibilities during the engagement.