LSAT 155 – Section 4 – Question 07

LSAT 155 - Section 4 - Question 07

November 2019

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT155 S4 Q07
+LR
Sufficient assumption +SA
Conditional Reasoning +CondR
Link Assumption +LinkA
A
1%
145
B
3%
157
C
2%
148
D
88%
161
E
6%
150
131
140
149
 +Easier 147.589 +SubsectionMedium

Computer security experts correctly maintain that computer passwords are a less secure means of protecting one’s information than are alternative security options like fingerprint scanners. But computer passwords are not going to be replaced by these other options anytime soon. The alternative security options remain significantly more expensive to employ, and they can replace passwords only if they become standard on most of the world’s computers.

Summary
The author concludes that computer passwords are not going to be replaced by alternate security options like fingerprint scanners. Why? Because in order for those options to replace passwords, they must become standard on most of the world’s computers. In addition, those other options are a lot more expensive than computer passwords.

Missing Connection
We can prove that computer passwords won’t be replaced by the alternative options if we can show that the alternatives won’t become standard on most of the world’s computers.

One way to prove that would be to establish that if the alternatives are a lot more expensive than computer passwords, then they won’t become standard on most of the world’s computers.

A
There are ways to make computer passwords a more secure means of protecting one’s information.
(A) doesn’t establish that the alternative methods won’t become standard on most of the world’s computers. So (A) doesn’t establish that the alternatives won’t replace computer passwords.
B
Any security option that is no more expensive to employ than computer passwords provides less security than computer passwords.
(B) concerns alternatives to computer passwords that are not more expensive than passwords. But those aren’t the alternatives we’re talking about. (B) doesn’t establish that the more-expensive alternatives won’t become standard on most of the world’s employers.
C
Most computer security experts do not believe that computer passwords will be replaced by an alternative security option anytime soon.
What experts believe doesn’t establish that the alternatives won’t become standard on most of the world’s computers. Maybe what the experts believe is wrong?
D
Security options that are significantly more expensive to employ than computer passwords will not become standard on most of the world’s computers anytime soon.
(D) establishes that the more-expensive alternatives won’t become standard on most of the world’s computers anytime soon. In connection with the last premise — which tells us that in order to replace passwords, those options have to become standard on most computers — (D) establishes that those options cannot replace passwords anytime soon.
E
As soon as a security option is developed that is not significantly more expensive to employ than computer passwords, computer passwords will be replaced as a security measure.
(E) establishes a condition under which computer passwords WILL be replaced. This doesn’t establish that computer passwords will NOT be replaced soon. If you think (E) does, you’re confusing sufficiency and necessity.

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LSAT PrepTest 155 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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