1.B because a conclusion in a story should sum up the story and end with a conclusion as to why you feel the way you feel about your speech.
2.D because this answer clearly explains why school should start later and which means it would have to end later to get your full hours of learning.
3.D because if you were to take each answer and read it into the opencsoace D is clearly the correct replacement for the original of what was written.
4.C because the fitness had already been chosen and in addition which is basically saying also the students had to etc.