Many newborn babies have a yellowish tinge to their skin because their blood contains a high level of the pigment bilirubin. One group of doctors treats newborns to reduce high levels of bilirubin, since bilirubin, if it enters the brain, might cause the tetanus that sometimes occurs in newborns. However, a second high, since the brain’s own natural defenses normally prevent bilirubin from entering.
What this question is testing
Your task
Find the choice that makes the argument's conclusion more likely to be true.
Common trap
Answers that are consistent with the argument but add no real support, or that strengthen a claim the argument doesn't make.
Winning move
Locate the gap between evidence and conclusion, then pick the choice that closes it.
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