C it is: Only very careful drivers use headlights when their use is not legally required.------>if only very careful drivers use headlight when their use is not legally required then it gives us a reason to believe that the fact "drivers who use headlights at all times are less likely to be involved in a collision than are drivers who use headlights only when visibility is poor" is NOT because of "usage of head light" BUT because THE DRIVER IS CAREFUL-------->hence it resolves this discrepancy that despite the above fact cited Yet Highway Safety Department records show that making use of headlights mandatory at all times does nothing to reduce the overall number of collisions.

In a jurisdiction where the use of headlights is optional when visibility is good, drivers who use headlights at all times are less likely to be involved in a collision than are drivers who use headlights only when visibility is poor. Yet Highway Safety Department records show that making use of headlights mandatory at all times does nothing to reduce the overall number of collisions.

Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above?

(A) In jurisdictions where use of headlights is optional when visibility is good, one driver in four uses headlights for daytime driving in good
weather.
(B) A law making use of headlights mandatory at all times is not especially difficult to enforce.
(C) Only very careful drivers use headlights when their use is not legally required.
(D) There are some jurisdictions in which it is illegal to use headlights when visibility is good.
(E) The jurisdictions where use of headlights is mandatory at all times are those where daytime visibility is frequently poor.

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PreThinking:In resolve Paradox Question one needs to find the link between the two opposite premises.
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A:Not resolving paradox
B:Out of scope
C:Correct answer .Only those drivers who are already careful while driving use headlight even in good visibilty means that they already are at low risk of and accident,but not all drivers will be careful even if they have to use headlight in good visibility.
D:Out of scope
E:Out of Scope.

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