PrepTest 155
[lcid:3719] Prep Test 155 LSAT — Logical Reasoning — S4
Logical reasoning
Question prompt
Computer security experts correctly
Remaining source text redacted.
Why the credited answer is right
Credited answer: D
The notes below walk through why it fits the stem and how to eliminate the rest.
Question Type
Strengthen with Sufficient Premise Questions
Answer choices
-
AThere are ways to Remaining source text redacted.
Why choice A is not credited
Incorrect. If this answer stated they could be made as secure as the other options, it might strengthen the argument. However, as written, it doesn't guarantee that passwords are here to stay, as it doesn't talk about expense. -
BAny security option that Remaining source text redacted.
Why choice B is not credited
Incorrect. This answer doesn't connect to the conclusion about widespread adoption, so it can't be sufficient. -
CMost computer security experts Remaining source text redacted.
Why choice C is not credited
Incorrect. This answer is about the beliefs of the computer security experts, which aren't established to be relevant to the actual adoption of security measures. -
DSecurity options that are Remaining source text redacted.
Why choice D matches the stem
Correct. Argument or Facts:
Argument
Valid or Flawed:
Flawed
Question Type:
Strengthen with Sufficient Premise
Stimulus Summary:
Non-password security measures are more expensive.
Non-passwords replace passwords → Widely adopted
Therefore, non-passwords won't replace passwords.
Answer Anticipation:
The conclusion matches with the contrapositive of the conditional statement:
Not widely adopted → Non-passwords won't replace passwords.
The premises don't establish that non-passwords won't be widely adopted, though—just that they're more expensive. So the correct answer will connect that expense with not being widely adopted.
Key Takeaway:
Strengthen with Sufficient Premise questions are frequently about connecting an idea from the premise to a new idea in the conclusion. Conditional statements are also common, so be on the lookout for them, as well! -
EAs soon as a Remaining source text redacted.
Why choice E is not credited
Incorrect. While this answer choice is in the world of our anticipation, it doesn't establish when these options will develop, so it doesn't connect to the conclusion about the timeline for this replacement happening.
What this tests
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