* The bill that makes using car phones while driving illegal

[cumulonimbus]

Politician: The bill that makes using car phones while driving illegal should be adopted. My support of this bill is motivated by a concern for public safety. Using a car phone seriously distracts the driver, which in turn poses a threat to safe driving. People would be deterred from using their car phones while driving if it were illegal to do so.
The argument’s main conclusion follows logically if which one of the following is assumed?
(A) The more attention one pays to driving, the safer a driver one is.
(B) The only way to reduce the threat to public safety posed by car phones is through legislation.
(C) Some distractions interfere with one’s ability to safely operate an automobile.
(D) Any proposed law that would reduce a threat to public safety should be adopted.
(E) Car phone use by passengers does not distract the driver of the car.

Here I chose C. Is C a necessary assumption, like option A in this question? -
a-group-of-children-of-various-ages-was-read-stories-t21967.html

D - sounds to me like moral obligation. Its preaching tone made me not mark it as the answer. I might be wrong if i decide against it this way, but it also seems to be an extreme situation.

However if C is negated - i.e. distraction while driving does not hamper one's ability to drive safely - the whole point of introducing a legislation is taken away.

Is my understanding wrong?
Could you please me direct to some video session Ron might have taken on this topic.




OA - D, source - gmat club (LSAT).

[RonPurewal]

hi,
per the forum rules, please cite the original source of this problem.
(gmat club is not a primary source; it's another forum, on which people collect problems from other sources, as they do here.)

if you know the original source, please post it within the next week; thanks.

[arunengineer21]

This is 13th question of section 2 of LSAT held in June 1997.

[RonPurewal]

Ok.

The format of this problem is, essentially, "Which of the following statements would you add to prove the conclusion rigorously?

The GMAT doesn't contain problems of this kind, so it's best not to discuss this problem on a GMAT forum.

Don't use LSAT critical reasoning problems to prepare for the GMAT. The LSAT problems test a skill set that is mostly irrelevant to the GMAT.