LSAT 31, Logical Reasoning II, Q2, LSATHacks

LR Question 2 Explanation, by LSATHacks

QUESTION TEXT: One way kidney stones can form is when urine produced in…

QUESTION TYPE: Paradox

FACTS: Kidney stones form when urine has too much calcium or oxalate. Yet increasing calcium intake actually decreases the likelihood of kidney stones forming again. 

ANALYSIS:The problem is pretty specific: too much calcium in the kidneys. If the new calcium didn’t go to the kidneys, then that could explain the paradox. 

___________

1. This shows that the same effect occurs in animals. But it doesn’t explain anything.
2. The stimulus wasn’t talking about increasing dietary oxalate. 
3. “Sometimes” could mean as little as 0.0001% of people who have kidney stones have this problem. And it doesn’t explain how eating more calcium helps.
4. CORRECT. This explains it. If we eat more calcium then kidneys actually have to deal with less calcium. 
5. This adds new information but doesn’t explain our problem.

Hi, I'm Graeme Blake

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