PT154 S4 Q7 ExplanationLate blight is a disease

Answer choices, explained

1. A

   Bad Conclusion Match1% picked this

   since radiation therapy can be an effective treatment for some types of cancer, it follows that higher doses of radiation will be more effective

   The conclusion of the original argument doesn't claim that higher doses of copper solution would be more effective in treating late blight. The conclusion in this answer choice doesn't involve the same flaw of favoring one explanation when others are just as plausible.

   1%
2. B

   Bad Evidence Match Bad Conclusion Match3% picked this

   since scurvy is caused by a deficiency of vitamin C, it follows that vitamin C is an

   This wouldn't be a terrible answer, except the premise and conclusion are completely reversed. It would be similar to the original argument if it read, "since vitamin C is an effective treatment for scurvy, it follows that scurvy is caused by a deficiency of vitamin C."

   3%
3. C

   Bad Conclusion Match1% picked this

   since malnutrition can cause health problems, it follows that the more food you eat, the

   This is similar to answer choice A. The original argument does not claim that, because something is effective, even more of that thing is more effective.

   1%
4. D

   Correct93% picked this

   since paracetamol is effective in treating headaches, it follows that headaches are caused by a lack of

   Why this is right

   This describes the same type of situation as the original argument. If we replace "paracetamol" with "copper," replace "headaches" with "late blight," and replace "bloodstream" with "mineral intake," we basically have the same argument with the same flaw.

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

   93%
5. E

   Bad Evidence Match Bad Conclusion Match2% picked this

   since calcium deficiency in apple trees causes brown spots on the apples, it follows that apple trees growing in soils that are rich in

   This is similar to answer choice B in that this reverses the premise and conclusion. The conclusion of the original argument claims that X causes Y, while that is stated as the evidence in this answer choice.

   2%