Doctor: In three separate

Answer choices

1. A

   Too Weak13% picked this

   A fourth study comparing infants who were currently sleeping with night-lights to infants who were not did not find any

   This might weaken a conclusion that night-lights cause nearsightedness, but that’s not the conclusion the argument reached.

   13%
2. B

   Too Weak5% picked this

   On average, young children who are already very nearsighted are no more likely to sleep with night- lights than young children

   This might weaken a conclusion that night-lights do not cause nearsightedness, but that’s not the conclusion the argument reached.

   5%
3. C

   Too Weak4% picked this

   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

   That most of the children studied were not nearsighted is not strong enough to weaken an argument that includes a study showing that young children who slept with night-lights are more likely than than those who do not sleep with night-lights to be nearsighted. This relative comparison leaves room for most young children who slept with night-lights not to develop nearsightedness.

   4%
4. D

   Correct38% picked this

   The two studies in which no correlation was found did not examine enough children to provide significant support for any conclusion regarding a

   Why this is right

   This weakens the conclusion by suggesting that the latter two studies were insufficient to reach the conclusion in the argument.

   Skill tested: Weaken · how this choice captures the argument's function is the move to repeat next time.

   38%
5. E

   Too Weak39% picked this

   In a fourth study involving 100 children who were older than those in any of the first three studies, several of the children who

   Several children could still amount to very few children. This answer is too weak to establish a correlation between night-lights and nearsightedness.

   39%