B. instruct
C. correct
D. destroy
His
Them
The idea which is most closely related to the theme in these lines is:
It is the law of life: one takes, then one hands over to another in one's turn.
B. select the best details to support your main points.
C. decide which focus for your paper is the strongest.
D. add another page to your paper to make it longer.
Editing is important because it allows you to: (B) select the best details to support your main points.
I believe that B is the best option here because editing essentially involves picking at the details in your paper and modifying it so that it fits the overall flow.
Answer:
The answer is A. check the overall structure of your paper.