Laws requiring the use of headlights during daylight hours can prevent automobile collisions. However, since daylight visibility is worse in countries farther from the equator, any such laws would obviously be more effective in preventing collisions in those countries. In fact, the only countries that actually have such laws are farther from the equator than is the continental United States.
Which of the following conclusions could be most properly drawn from the information given above?
Drivers in the continental United States who used their headlights during the day would be just as likely to become involved in a collision as would drivers who did not use their headlights.
In many countries that are farther from the equator than is the continental United States poor daylight visibility is the single most important factor in automobile collisions.
The proportion of automobile collisions that occur in the daytime is greater in the continental United States than in the countries that have daytime headlight laws.
Fewer automobile collisions probably occur each year in countries that have daytime headlight laws than occur within the continental United States.
Daytime headlight laws would probably do less to prevent automobile collisions in the continental United States than they do in the countries that have the laws.