The correct answer is D. All of the above.
The UNESCO publication “Recommendation on the Status of Teachers” (1966) states that teachers should have “a mastery of the subject matter and the pedagogical skills necessary for teaching”. It also states that teachers should be “innovative in their approach and teaching strategies” and that they should “behave in a way that is just and fair”.
Mastery over the subject and competency for teaching are essential for teachers to be able to effectively deliver instruction to their students. Innovativeness in approach and teaching strategies allows teachers to keep their lessons fresh and engaging, and to meet the needs of all learners. Justice to the profession means that teachers should uphold the highest standards of ethical conduct, and that they should be committed to their students’ learning.
All of these qualities are essential for teachers to be successful in their profession.