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?

Answer and Explanation

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".