Effective teaching is the ability to improve student achievement as shown by research. Key Points Five key behaviors of effective teaching are Lesson Clarity – Ideas and instructions provided in the class should be clear to all the students at all levels. Lessons should be given in a clear and concise manner. Providing some advanced organizers in the beginning and summary lessons at the end will be helpful. Instructional Variety – Use various different types of teaching tools to make lessons and teaching processes engaging. Use humor, variation in tone and voices, and gestures to tech. Use various types of questions to access learning. Teacher task orientation – Teachers should handle inevitable interruptions quickly, prevent and put an end to indiscipline in the classroom, organize classes well and establish smooth transitions. Engagement in the learning process – Keep students in a disciplined way so that lectures run smoothly. There should be proper organization in the classroom. The teacher should monitor the classwork provided by him or her. Keep a dedicated time to understand the students' confusion and provide guidance to them. Student success rate – Students should spend major time on tasks that allow them to absorb the learning material provided to them. Content should be organized in such a way that it connects the prior learning and helps in building concepts. Hence, (B), (C), and (D) only is the correct answer. Additional Information Probing –