63. At this point, the writer is considering adding the following true statement:
Today, the Tube, as the London Underground subway is called, covers approximately 250 miles of trackway.
Should the writer make this addition here?
Your Answer is
Correct Answer is C
Explanation
The added sentence is a description of the London Underground today and is not relevant to the subject of this paragraph. Item D is wrong in interpreting the subject of the paragraph "Some recent maps of the London Underground".