The writer wants to add the following sentence to the third paragraph (sentences 6-9) to provide additional...

14. The writer wants to add the following sentence to the third paragraph (sentences 6-9) to provide additional explanation.
This means that the United States must convert to metric units whenever it is dealing with the rest of the world.
Where would the sentence best be placed?
(A) Before sentence 6
(B) After sentence 6
(C) After sentence 7
(D) After sentence 8
(E) After sentence 9
15. The writer wants to add more information to the third paragraph (sentences 6-9) to support the main argument of the paragraph. All of the following pieces of evidence help achieve this purpose EXCEPT which one?