Logical reasoning PrepTest 118 · Section 3 · Question 17

Incorrect. The warning is against widespread use not the practicality of it so this answer doesn't provide an explanation.

Incorrect. Even if compliance is low, those that do comply would be better off, so this doesn't provide a reason that widespread use could be dangerous.

Incorrect. Even if it's not preventing the spread of the disease, reducing the harm once someone contracts it would be a good thing, so there's still no danger attached to the vaccine.

Incorrect. This answer explains why misusing the drug is dangerous, but not why widespread usage is dangerous. Just limit it to being administered by a doctor and everything should be fine!

Correct. Argument or Facts:
Facts

Question Type:
Paradox

Stimulus Summary:
A vaccine for chicken pox has no serious side effects and is effective against chicken pox
That vaccine is said to be dangerous if used widely

Answer Anticipation:
As with all Paradox questions, we should start by defining the paradox. Here, it's that researchers warn that a very effective vaccine is dangerous if widely used.

So there must be some threat posed by the vaccine when widely used other than its effectiveness against chicken pox and side effects. Maybe such widespread use causes some type of unexpected outcome. Let's stay open to any negative possibility here!

Answer Explanation:
This answer presents a potential negative consequence of the widespread use of the vaccine. If using it increases the odds of deadlier forms of vaccine—resistant chicken pox from forming, then using it more increases those odds even further, thus making it dangerous. This answer, in providing an outcome of the widespread vaccine use that presents a danger, resolves the paradox.

Key Takeaway:
This Paradox question falls into a common pattern—something is established as good but the experts warn that it's bad in some way. It will also sometimes have something established as "bad" but the experts state that it's actually "good" in some way. In either case, look for a negative or positive that the stimulus doesn't bring up!