The Department of Homeland Security has proposed new federal requirements for driver's licenses that would allow them to be used as part of a national identification system. Using licenses for purposes not directly related to operating a motor vehicle is un-American because it would require U.S. citizens to carry the equivalent of "papers." Such a requirement would allow the government to restrict their movements and activities in the manner of totalitarian regimes. In time, this could make other limits on freedom acceptable.
The author assumes which of the following?
A) The next presidential election will be dishonest, as has happened in eastern European countries.
B) The government will soon start curtailing the activities of those it considers "dissidents."
C) Blanket restrictions on law-abiding individuals are contrary to the traditions of American culture and law.
D) The majority of Americans are not willing to give up their right to travel and move about without identification.
E) Americans should resist all government regulation of their lives.

According to me, ans choice is D.
Here conclusion is, "Using licenses for purposes not directly related to operating a motor vehicle is un-American".
And choice D relates to the premise and conclusion. It is not irrelevant nor does it give extra info outside the premise.

Pls suggest any help...