Which of the following will be considered key teaching behaviour belonging to the category of effectiveness?A. Making ideas clear to learners who may be at different level of understandingB. Showing enthusiasm and animation through variation in eye contact, voice and gesturesC. Using student ideas by acknowledging and summarizingD. Probing through general questions and shifting a discussion to some higher thought levelE. Using meaningful verbal praise to get and keep students actively participating in learning processChoose the correct answer from the options given below:

• A. A, B and C only
• B. A, B and E
• C. B, C and D only
• D. C, D and E only