PrepTest 153

[lcid:3710] Prep Test 153 LSAT — Logical Reasoning — S3 Logical reasoning

Question prompt

All of the one-way Remaining source text redacted.
Why the credited answer is right

Credited answer: B

The notes below walk through why it fits the stem and how to eliminate the rest.

Question Type

Must Be True Questions / Sufficient & Necessary Questions

Answer choices

  1. A
    Batchelder Avenue is a Remaining source text redacted.
    Why choice A is not credited
    Incorrect. No! Batchelder can't be a one-way. If it was, it would have bike lanes and no buses.
  2. B
    Batchelder Avenue is not Remaining source text redacted.
    Why choice B matches the stem
    Correct. Argument or Facts:
    Facts

    Question Type:
    Must Be True

    Stimulus Summary:
    IF one-way in this city → THEN dedicated bike lanes.
    IF dedicated bike lane → THEN city buses do not travel that road.
    IF dedicated bike lane → THEN no parking on that road.

    City bus #9 travels the full length of Batchelder Ave.

    Answer Anticipation:
    You can get a lot out of this stimulus. Two transitives from the rules: IF one-way in this city → THEN city buses don't travel, and IF one-way in this city → THEN no parking on the road.

    There's also the added premise about bus #9: It travels all of Batchelder, and we know from the second premise that IF bike lane → THEN no buses, so Batchelder must not have a bike lane. All one-way streets have bike lanes, so Batchelder must not be a one-way.

    Answer Explanation:
    Yes! Batchelder must not be a one-way, because all one-ways have bike lanes and all bike lanes deter buses.

    Key Takeaway:
    This is simple to diagram, but the reasoning could be tough, especially when you're tired. Watch out for converse and inverse fallacies whenever you're using conditional reasoning. In this case, every wrong answer is based on a converse or inverse fallacy.
  3. C
    Parking is allowed on Remaining source text redacted.
    Why choice C is not credited
    Incorrect. Could be true, could be false. We only know about parking rules on streets with bike lanes, and that doesn't apply here because Batchelder can't possibly have a bike lane. If it did, the bus wouldn't take this route.
  4. D
    Parking is not allowed Remaining source text redacted.
    Why choice D is not credited
    Incorrect. Could be true, could be false. We only know about parking rules on streets with bike lanes, and that doesn't apply here because Batchelder can't possibly have a bike lane. If it did, the bus wouldn't take this route.
  5. E
    Parking is not allowed Remaining source text redacted.
    Why choice E is not credited
    Incorrect. Could be true, could be false. We only know about parking rules on streets with bike lanes, and that doesn't apply here because Batchelder can't possibly have a bike lane. If it did, the bus wouldn't take this route.

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