Ronald is a runner on the track team and is a great hurdler.

Question

Ronald is a runner on the track team and is a great hurdler.
All runners on the track team are either sprinters or long-distance runners
Hurdlers never run long distance because they lack the endurance
Since Ronald is a runner on the track team and a hurdler, he cannot be a long-distance runner.
Ronald must be a sprinter
To guarantee the conclusion that Ronald is fast, there must be a rule connecting sprinters to being fast: All sprinters are fast
Option D.

For the conclusion drawn above to be logically correct, which of the following must be true?

A. Sprinters are faster than hurdlers.

B. All runners on the track team who run hurdles also run long distance.

C. Hurdling requires more endurance than running long distance.

D. All sprinters are fast.

E. Every runner on the track team who is fast is a sprinter.

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abhishekb1352 · Answer

Ronald is a runner on the track team and is a great hurdler.
All runners on the track team are either sprinters or long-distance runners 
Hurdlers never run long distance because they lack the endurance
Since Ronald is a runner on the track team and a hurdler, he cannot be a long-distance runner.
Ronald must be a sprinter
To guarantee the conclusion that Ronald is fast, there must be a rule connecting sprinters to being fast: All sprinters are fast
Option D.

Shyam97 · Answer

breaking down the logic

1. Ronald is on the track team and is a hurdler
2. track team member are either sprinter or long distance runner. since we know hurdlers never run long distance than ronald must be a sprinter
3. the conclusion is ronald must be fast------>this is we can infer that  ronald is a sprinter

looking at the options

A. Sprinters are faster than hurdlers.------------incorrect

B. All runners on the track team who run hurdles also run long distance.--------incorrect

C. Hurdling requires more endurance than running long distance.-------incorrect

D.  All sprinters are fast.--------correct

E. Every runner on the track team who is fast is a sprinter.----incorrect

option is D is answer

vasu1104 · Answer

ronald= runner and great hurdler.
hurdler can never run long distance because lack of endurance needed.
so, long distance need more endurance than hurdling.

that means ronald is not long distance runner.

now in runner, either you are sprinter or long distance runner.
few long distance runners dont run sprint. because they are not fast.

so, for to be sprinter, you have to be fast.

A we dont know anyhting about this comparison. out.
B we know hurdlers never run long distance so this violates that condition. out.
C this goes in opposite direction. out.
D yes. we know sprinters needs to be fast. so keep.
E this talks about reverse. but we know that ronald was fast because he cant run long distance and to run you need to fast. but we cant say that everryone fast is sprinter

choice D

counterclash1 · Answer

Answer: Option D
 
STIMULUS FORMAL LOGIC MAP:
- Premise 1: Ronald = Track Runner + Hurdler
- Premise 2: Track Runner -> Sprinter OR Long Distance
- Premise 3: Hurdler -> NOT Long Distance
- Deduction: Ronald MUST be a Sprinter.
- Conclusion: Ronald must be fast.

LOGICAL GAP:
We know Ronald is a Sprinter. To conclude he is fast, we need the conditional rule: Sprinter -> Fast.

OPTION ELIMINATION:
(A) Relative vs Absolute Trap. "Faster than" does not mean "fast".
(B) Contradicts Premise. Stimulus explicitly says hurdlers NEVER run long distance.
(C) Contradicts Premise & Irrelevant.
 (D) CORRECT. Provides the required link: Sprinter -> Fast. Since Ronald is a Sprinter, Ronald is fast. 
(E) Mistaken Reversal Trap. States Fast -> Sprinter instead of Sprinter -> Fast.

Vivek1707 · Answer

A. We don't need sprinters to be faster than hurdlers.
B. This directly contradicts the passage, which says hurdlers never run long distance.
C. This doesn't establish that Ronald is fast.
D. Yes, If all sprinters are fast, then Ronald must be a sprinter because he's a runner who isn't a long-distance runner. Therefore, he must be fast.
E. This reverses the relationship. We need sprinter → fast, not fast → sprinter.

madsb18 · Answer

Tips for using such analogy/Must be True Questions, Binary Trees help a lot, in my opinion

Ronald - track team and is a great hurdler = H.

Start Binary Tree here:

Runners - 1. Sprinters or 2. Long Distance.

Long Distance Runners - 1. Not Sprinters (not fast enough) 2. Sprinters (fast enough)

Ronald is not Long Distance runner. Hence Ronald is a Sprinter.

Ronald is fast. Given.

D. All sprinters are fast.

Ronald is a runner on the track team and is a great hurdler.

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­Ronald is a runner on the track team and is a great hurdler.

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Ronald is a runner on the track team and is a great hurdler.