Answer:option D set challenging and specific goals that are not too difficult or too easy to encourage persistence and concentration during lessons
Explanation: student most times love it when they are push beyond their limits and some teaching strategies help motivate student be more, do more and excel acedemically teachers usually tries to find the best way to reach to this student and this method of giving student challenging questions that are not too difficult will also help motivate the student and help the teach to reach to the student by recognizing where they are falling short and helping them bounce out of it.