Researchers have discovered that caffeine

Answer choices

1. A

   Too Strong: #1 for addictions9% picked this

   There is no psychoactive substance to which more people are physically addicted than are

   It says that caffeine can be as addictive, and it says that caffeine is tied for #1 or alone at #1 when it comes to number of people who consume it. But we don't have any info about the number of people addicted to caffeine, so we can't compare # of caffeine addicts to # of any other kind of addict.

   9%
2. B

   Too Strong: typically11% picked this

   A physical addiction to a particular psychoactive substance will typically give rise to

   We only know that caffeine, which is a psychoactive substance, sometimes give rise to diverse psychological withdrawal symptoms. This passage doesn't let us generalize that most addictions to psychoactive substances give rise to diverse psychological symptoms.

   11%
3. C

   Out of Scope: non-psychoactive20% picked this

   Not all substances to which people can become physically addicted

   Not all A's are B = Some A's are not-B, so this answer choice says, "at least one substance to which people can become physically addicted is not psychoactive". It would probably be tempting for people to say: "Right. Caffeine!" But caffeine is identified (twice) as a psychoactive substance, because it says "caffeine can be as addictive as any other psychoactive substance" in the first sentence and uses that same "any other" formulation in the last sentence too. When you say "X is just as funny as any other clown", you're implying that X is a clown.

   20%
4. D

   Too Strong: conditional8% picked this

   If one is physically addicted to a psychoactive substance, one will become unusually depressed when one is no

   We only know that some people have "unusual depression" as a withdrawal symptom from caffeine. We can't take that fact and support a conditional rule that "if addicted to any psychoactive substance, then unusually depressed will be one your withdrawal symptoms."

   8%
5. E

   Correct52% picked this

   If alcohol is a physically addictive psychoactive substance, there are not more people who consume

   Why this is right

   We know that "at least as many people consume caffeine as consume any other psychoactive substance". So if Rice Krispies is a psychoactive substance, then at least as many people consume caffeine as consume Rice Krispies. Because of that last sentence, we know that if alcohol is a psychoactive substance, then at least as many people consume caffeine as alcohol. If at least as many consume caffeine, then it's fair to say there are not more who consume alcohol.

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

   52%