The correct answer is A. The United States have an advantage over Canada in oil production, due to the fact that less work hours are needed to be able to produce it. This gives a significant advantage since it increases the availability of oil in one country respect to the other (in the United States it is easier to find oil than in Canada, so it would take less time to produce it).
the answer that would most likely fit here would be moving the audience with words. As a writer, I try to have my audience gain a mental image, and actually enjoy my writing!
