Question ID:PT53 S1 Q8 Passage:Doctor: In three separate studies, researchers compared children who had slept with night-lights in their rooms as infants to children who had not. In the first study, the children who had slept with night-lights proved more likely to be nearsighted, but the later studies found no correlation between night-lights and nearsightedness. However, the children in the first study were younger than those in the later studies. This suggests that if night-lights cause nearsightedness, the effect disappears with age. Stem:Which one of the following, if true, would most weaken the doctor's argument? Correct Answer Choice:DChoice A:A fourth study comparing infants who were currently sleeping with night-lights to infants who were not did not find any correlation between night-lights and nearsightedness. Choice B:On average, young children who are already very nearsighted are no more likely to sleep with night-lights than young children who are not already nearsighted. Choice C:In a study involving children who had not slept with night-lights as infants but had slept with night-lights when they were older, most of the children studied were not nearsighted. Choice D:The two studies in which no correlation was found did not examine enough children to provide significant support for any conclusion regarding a causal relationship between night-lights and nearsightedness. Choice E:In a fourth study involving 100 children who were older than those in any of the first three studies, several of the children who had slept with night-lights as infants were nearsighted.