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Exam LSAT Section 1 Logical Reasoning All Questions

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Exam LSAT Section 1 Logical Reasoning topic 1 question 154 discussion

Actual exam question from Test Prep's LSAT Section 1 Logical Reasoning
Question #: 154
Topic #: 1
[All LSAT Section 1 Logical Reasoning Questions]

It is inaccurate to say that a diet high in refined sugar cannot cause adult-onset diabetes, since a diet high in refined sugar can make a person overweight, and being overweight can predispose a person to adult-onset diabetes.
The argument is most parallel, in its logical structure, to which one of the following?

  • A. It is inaccurate to say that being in cold air can cause a person to catch a cold, since colds are caused by viruses, and viruses flourish in warm, crowded places.
  • B. It is accurate to say that no airline flies from Halifax to Washington. No airline offers a direct flight, although some airlines have flights from Halifax to Boston and others have flights from Boston to Washington.
  • C. It is correct to say that over fertilization is the primary cause of lawn disease, since fertilizer causes lawn grass to grow rapidly and rapidly growing grass has little resistance to disease.
  • D. It is incorrect to say that inferior motor oil cannot cause a car to get poorer gasoline mileage, since inferior motor oil can cause engine valve deterioration, and engine valve deterioration can lead to poorer gasoline mileage,
  • E. It is inaccurate to say that Alexander the Great was a student of Plato; Alexander was a student of Aristotle and Aristotle was a student of Plato.
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Suggested Answer: D 🗳️
The author of the stimulus is evidently responding to someone claiming that a diet high in refined sugar can’t cause diabetes. "That’s inaccurate," says he. How come? Because such a diet can make one overweight, which in turn can lead to diabetes. This can be broken down algebraically: Its wrong to say that X cant cause Y, because X can lead to Z, which in turn can lead to Y.

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