Question 1 (5 points)
 Combine these two simple sentences into a complex sentence.
 Many industrialized nations use the metric system. The United States refuses to
 adopt it.
 a) Although many industrialized nations use the metric system, the United
 States refuses to adopt it.
 b) Many industrialized nations use the metric system, but the United States
 refuses to adopt it.
 C
 Many industrialized nations use the metric system; however, the United
 States refuses to adopt it.
 d)
 Many industrialized nations use the metric system, but the United States
 refuses to adopt it.