Q14 - In jurisdictions where use

[sumukh09]

I picked E over C because, well, I didn't like C. I thought E helped resolved the discrepancy because if visibility is frequently poor in areas where headlights are mandatory then that might explain why the overall number of collisions have not been reduced by legislation governing the use of headlights ie) because the weather conditions in these jurisdictions are frequently poor more collisions occur. Is E incorrect because we don't know if the mandatory provision regarding headlights is actually preventing more collisions than if there were no provision?

C says ~legally required ---> very careful drivers use headlights

How does this tie into the part about mandatory headlights legislation and it doing nothing to reduce the number of collisions?

This is question 14

[rinagoldfield]

This is an explain-a-result question.

We’re presented with an apparent discrepancy. Records indicate that forcing drivers to use headlights all the time doesn’t reduce the overall number of car accidents. Yet drivers who use headlights all the time are less likely to get into car accidents. Huh?

(C) resolves the apparent discrepancy. Those drivers who use headlights all the time are extra-super-careful drivers. Perhaps their uber-caution, rather than their use of headlights, causes their lower rate of accidents. But mandatory headlight use won’t bump up the number of uber-cautious drivers. This explains why requiring all drivers to use headlights all the time won’t impact accident rates.

(A) is irrelevant. Who cares how many drivers use headlights during the day? We want to know about safety.
(B) is also irrelevant. Great, mandatory headlight use is easy to enforce. But will it make us any safer?
(D) is irrelevant, too. So, sometimes headlight use is illegal! But where’s the connection between headlight use and accident rates?
(E) is, again, irrelevant. It only tells us that headlight use is mandatory in some places. We don’t know whether or not these laws have any impact on the number of car accidents. Perhaps they drain batteries while having zero effect on safety.

[JinZ551]

I realize this is a correlation-causation flaw!
Just because drivers who use headlights at all times are less likely to be involved in a collision than others, doesn't mean that the use of headlight keep them away from collision, answer choice C give an alternative explanation that both the low rate of collision and the action of using headlight are caused by drivers being extra careful.
Great question!

But I still have difficulty eliminating E, is it because it only talks about daytime and not including nighttime?